The main ingredients of minerals are calcium fluoride (CAF_2), which contains more impurities. CA is often replaced by rare earth elements such as Y and CE. In addition, it also contains a small amount of Fe2O3, SIO2 and trace CL, O3, HE, etc. The fluorite in nature is often bright, and the hardness is lower than that of a knife. It can be used to prepare hydrogen fluoride:
CAF_2 H_2SO_4 = CASO_4 2HFuparrow
1 Basic nature of fluorite
o 1.1 Crystal system and crystalline habit
o 1.2 optical properties
o 1.3 mechanical properties n n * 2 The variety of fluorite
o 2.1 Divide it according to the use of the process
o 2.2 Classification of common colors
o 2.3 optimization treatment of fluorite and its identification
o 2.4 The quality evaluation of fluorite
* 3 Brief introduction to the origin of fluorite
[Edit]
Basic nature
[Edit]
Crystal system and crystalline habits
Single crystals are mainly cube, a few are diamond -shaped duodang and octagonal body. The cube crystals often appear parallel to the edges -like stripes, and the collection body is granular, crystal cluster, strip -shaped, block, etc.
[Edit]
optic properties
* color: pure fluorite is colorless, but because it contains more Y, CE, CA, Wulingle elements, causing the fluorite structure to be vacant, producing color hearts, common colors are light green to dark green, blue, green, yellow, wine yellow, purple, violet, brown, rose red, dark red, dark red, dark red Wait.
* luster and transparency: glass luster; transparent to translucent.
* Light: Memorandum body.
* refractive index: 1.438 (± 0.01)
* multicolor: no multi -color.
* Luminousness: UV light can have purple or purple -red fluorescence under ultraviolet light. The alcohol lamp is heated, or the sun can be exposed in the sun. In addition, purple fluorite has the characteristics of friction and glow.
* spectrum absorption: The visible light absorption spectrum of fluorite is not characteristic and changes greatly, once absorbing. The absorption line is obvious.
[Edit]
It mechanical properties
* Lifting: Four groups of fluorite ｛111｝ Four groups are complete.
* hardness: HM = 4.
* density: 3.18 ( 0.07, -0.18) G / CM3.
[Edit]
The variety of fluorite
The jewelry industry is often divided into the variety of fluorite according to the process and color characteristics of fluorite;
[Edit]
The divide according to process use
according to process use, fluorite can be divided into two types: gem -level and jade -level.
* Gem level: Single crystal particles large, transparent, fresh color, because of low hardness, rarely used for jewelry, and mostly used for viewing and collecting.
* Jade grade: a granular or fiber -like collection, translucent, single color or different colors in a strip -shaped distribution. Mostly used for carving or making process ornaments.
[Edit]
In common colors to divide
The varieties such as green, purple, and blue.
* green fluorite: blue -green, green, light green. The more common ones are crystal clusters. In ancient times, there was a soft water green crystal that it was not used.
* purple fluorite: deep purple, purple. It is often distributed in a strip. In ancient times, it was known as the amethyst, and it was not used.
* blue fluorite: gray blue, green blue, light blue, often the surface is deep and the center is shallow.
* yellow fluorite: orange to yellow, often appearing in strips.
* colorless fluorite; colorless transparency to semi -transparent appears with single crystals or crystal clusters.
[Edit]
The optimization treatment of fluorite and its identification
* Heating treatment: Heating treatment is more common in fluorite, by heating, heating, heating It can turn dark blue to black fluorite into blue. Generally speaking, this heating treatment is difficult to identify, and its color is stable in environments below 300 ° C.
* Filling plastic or resin: Fill plastic or resin in fluorite. The main purpose is to heal the surface cracks so that it does not cause cracks during processing or wearing. The appraisal of the fluorite that is filled is mainly in the following aspects:
1.
2. The hot needle test can melt resin and plastic.
3. UV fluorescence observation, plastic and resin filled with characteristic fluorescence.
* Floor treatment: colorless fluorite can produce purple by radiation. The fluorite treated with radiation is extremely unstable, and the light will fade, so this treatment method does not have practical value.
[Edit]
The quality evaluation of fluorite
gemstone -level fluorite requires transparent, no mixed colors, and bright colors. The jade -level fluorite set requires that the granules are fine, dense, and large.
[Edit]
The introduction of fluorite
world gem -class fluorite is mainly distributed in the United States, Colombia, Canada, Britain, Namibia, And Austria, Switzerland, Italy, Germany, Czech Republic, Slovakia, former Soviet Union, Australia, South Africa and other places. For example, Illinois, Kentucky, etc. in the United States produces purple, violet, blue, yellow, brown equivalent and colorless transparent fluorite. stone. Canada Anda Lumbo -produced colorless transparent fluorite crystals. Convar, British, white, blue, violet, pale red brown and other fluorite. Namibia's emerald fluorite. Almost all provinces and regions in China have found fluorite resources. Among them, gem -level fluorite is mainly distributed in Zhejiang, Anhui, Jiangxi, Fujian, Henan, Hubei, Hunan, Guangxi, Sichuan, Guizhou, Qinghai, Xinjiang and other places.
The answer: If it is freedom-Manager 5th level 2-19 17: 37
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Fluorite, also known as fluorite, is a mineral, its main component is calcium fluoride (CAF_2), which contains impurities compared Many, CA is often replaced by rare earth elements such as Y and CE. In addition, it also contains a small amount of Fe2O3, SIO2 and trace CL, O3, HE, etc. The fluorite in nature is often bright, and the hardness is lower than that of a knife. It can be used to prepare hydrogen fluoride:
CAF_2 H_2SO_4 = CASO_4 2HFuparrow
1 Basic nature of fluorite
o 1.1 Crystal system and crystalline habit
o 1.2 optical properties
o 1.3 mechanical properties n n * 2 The variety of fluorite
o 2.1 Divide it according to the use of the process
o 2.2 Classification of common colors
o 2.3 optimization treatment of fluorite and its identification
o 2.4 The quality evaluation of fluorite
* 3 Brief introduction to the origin of fluorite
[Edit]
Basic nature
[Edit]
Crystal system and crystalline habits
Single crystals are mainly cube, a few are diamond -shaped duodang and octagonal body. The cube crystals often appear parallel to the edges -like stripes, and the collection body is granular, crystal cluster, strip -shaped, block, etc.
[Edit]
optic properties
* color: pure fluorite is colorless, but because it contains more Y, CE, CA, Wulingle elements, causing the fluorite structure to be vacant, producing color hearts, common colors are light green to dark green, blue, green, yellow, wine yellow, purple, violet, brown, rose red, dark red, dark red, dark red Wait.
* luster and transparency: glass luster; transparent to translucent.
* Light: Memorandum body.
* refractive index: 1.438 (± 0.01)
* multicolor: no multi -color.
* Luminousness: UV light can have purple or purple -red fluorescence under ultraviolet light. The alcohol lamp is heated, or the sun can be exposed in the sun. In addition, purple fluorite has the characteristics of friction and glow.
* spectrum absorption: The visible light absorption spectrum of fluorite is not characteristic and changes greatly, once absorbing. The absorption line is obvious.
[Edit]
It mechanical properties
* Lifting: Four groups of fluorite ｛111｝ Four groups are complete.
* hardness: HM = 4.
* density: 3.18 ( 0.07, -0.18) G / CM3.
[Edit]
The variety of fluorite
The jewelry industry is often divided into the variety of fluorite according to the process and color characteristics of fluorite;
[Edit]
The divide according to process use
according to process use, fluorite can be divided into two types: gem -level and jade -level.
* Gem level: Single crystal particles large, transparent, fresh color, because of low hardness, rarely used for jewelry, and mostly used for viewing and collecting.
* Jade grade: a granular or fiber -like collection, translucent, single color or different colors in a strip -shaped distribution. Mostly used for carving or making process ornaments.
[Edit]
In common colors to divide
The varieties such as green, purple, and blue.
* green fluorite: blue -green, green, light green. The more common ones are crystal clusters. In ancient times, there was a soft water green crystal that it was not used.
* purple fluorite: deep purple, purple. It is often distributed in a strip. In ancient times, it was known as the amethyst, and it was not used.
* blue fluorite: gray blue, green blue, light blue, often the surface is deep and the center is shallow.
* yellow fluorite: orange to yellow, often appearing in strips.
* colorless fluorite; colorless transparency to semi -transparent appears with single crystals or crystal clusters.
[Edit]
The optimization treatment of fluorite and its identification
* Heating treatment: Heating treatment is more common in fluorite, by heating, heating, heating It can turn dark blue to black fluorite into blue. Generally speaking, this heating treatment is difficult to identify, and its color is stable in environments below 300 ° C.
* Filling plastic or resin: Fill plastic or resin in fluorite. The main purpose is to heal the surface cracks so that it does not cause cracks during processing or wearing. The appraisal of the fluorite that is filled is mainly in the following aspects:
1.
2. The hot needle test can melt resin and plastic.
3. UV fluorescence observation, plastic and resin filled with characteristic fluorescence.
* Floor treatment: colorless fluorite can produce purple by radiation. The fluorite treated with radiation is extremely unstable, and the light will fade, so this treatment method does not have practical value.
[Edit]
The quality evaluation of fluorite
gemstone -level fluorite requires transparent, no mixed colors, and bright colors. The jade -level fluorite set requires that the granules are fine, dense, and large.
[Edit]
The introduction of fluorite
world gem -class fluorite is mainly distributed in the United States, Colombia, Canada, Britain, Namibia, And Austria, Switzerland, Italy, Germany, Czech Republic, Slovakia, former Soviet Union, Australia, South Africa and other places. For example, Illinois, Kentucky, etc. in the United States produces purple, violet, blue, yellow, brown equivalent and colorless transparent fluorite. stone. Canada Anda Lumbo -produced colorless transparent fluorite crystals. Convar, British, white, blue, violet, pale red brown and other fluorite. Namibia's emerald fluorite. Almost all provinces and regions in China have found fluorite resources. Among them, gem -level fluorite is mainly distributed in Zhejiang, Anhui, Jiangxi, Fujian, Henan, Hubei, Hunan, Guangxi, Sichuan, Guizhou, Qinghai, Xinjiang and other places.
Fluorite, also known as soft crystal, colorful gemstone, rainbow gem. Because its crystal clear is very similar to crystals, but the hardness is lower than that of crystals, it is also known as "soft green crystal". But generally do not advocate this artificial confusion, but directly called purple fluorite and green fluorite. Fluorite carving has a long history as early as Europe. Among them, the yellow -purple stripes produced by Deber County, UK, became known as "Blue John". Wine glasses and vases, ancient Romans superstitious that this wine glass will make people not drunk. There is an ancient workshop specialized in the United Kingdom, the carved valuable vases supply the royal nobles, and many major European museums have this exquisite fluorite crafts. Sui Zhu, also known as "Night Pearl" in Chinese history, is also known as "Night Pearl". According to research, it is likely to be fluorite with phosphorus light effects.
u003C!-[if!]-> u003C!-[Endif]->
[Features] The refractive index of fluorite is very bottom, only : 1.43, a weak glass luster. The hardness is: 3.5-4 radioactivity: none, the dispersion value is: 0.156. The scattered color of the diamond is: 0.044. The color of fluorite is very rich. Except for red and black, you can almost see any other colors.
[Physical effects] The energy of fluorite is tightly soft, which can help ease the skinny skin, reduce mental tension, and eliminate work pressure. Fluorite is a lucky stone in June of the Gregorian calendar.
[Spiritual effect]
(1) Corresponding to the sixth round -eyebrow heart wheel, the third eye zone between the two eyebrows, the corresponding color is not anxious, not slow, not slow, not slow, not slow, not slow, not slow, not slow, not slow, not to be slow. The purple and blue (the combination of red and blue, red represents warmth), the third eye is the center of spiritual power and higher intuition. Through the power of the eyebrow wheel, it can receive guidance, and then conducts a higher self -awareness to a higher self -self. , Let people experience ECG, Touring Touring Tour, and Cognition of previous lives.
(2) There are six tip of the octopus of fluorite, which happens to represent the sixth round. The tip can create a significant focus and agile thinking. When the thoughts are confused, and there is no clue, you may wish to hold the fluorite to help your thoughts clarify.
(3) Increasing people's aesthetics and affinity
(4) When the mood is not good, put a fluorite and then On the three rounds (solar wheels), the spirit can be boosted and calmed down.
(5) People who are easy to be nervous can use fluorite, put fluorite between the thighs or beside the sun nervous cluster, which can make people's skills more flexible, confident, calm and organized. Use when driving. It can also make people refreshing!
Fluorite
Waves encyclopedia, free encyclopedia
jump to:, search
The main ingredients of minerals are calcium fluoride (CAF_2), which contains more impurities. CA is often replaced by rare earth elements such as Y and CE. In addition, it also contains a small amount of Fe2O3, SIO2 and trace CL, O3, HE, etc. The fluorite in nature is often bright, and the hardness is lower than that of a knife. It can be used to prepare hydrogen fluoride:
CAF_2 H_2SO_4 = CASO_4 2HFuparrow
1 Basic nature of fluorite
o 1.1 Crystal system and crystalline habit
o 1.2 optical properties
o 1.3 mechanical properties
n n * 2 The variety of fluorite
o 2.1 Divide it according to the use of the process
o 2.2 Classification of common colors
o 2.3 optimization treatment of fluorite and its identification
o 2.4 The quality evaluation of fluorite
* 3 Brief introduction to the origin of fluorite
[Edit]
Basic nature
[Edit]
Crystal system and crystalline habits
Single crystals are mainly cube, a few are diamond -shaped duodang and octagonal body. The cube crystals often appear parallel to the edges -like stripes, and the collection body is granular, crystal cluster, strip -shaped, block, etc.
[Edit]
optic properties
* color: pure fluorite is colorless, but because it contains more Y, CE, CA, Wulingle elements, causing the fluorite structure to be vacant, producing color hearts, common colors are light green to dark green, blue, green, yellow, wine yellow, purple, violet, brown, rose red, dark red, dark red, dark red Wait.
* luster and transparency: glass luster; transparent to translucent.
* Light: Memorandum body.
* refractive index: 1.438 (± 0.01)
* multicolor: no multi -color.
* Luminousness: UV light can have purple or purple -red fluorescence under ultraviolet light. The alcohol lamp is heated, or the sun can be exposed in the sun. In addition, purple fluorite has the characteristics of friction and glow.
* spectrum absorption: The visible light absorption spectrum of fluorite is not characteristic and changes greatly, once absorbing. The absorption line is obvious.
[Edit]
It mechanical properties
* Lifting: Four groups of fluorite ｛111｝ Four groups are complete.
* hardness: HM = 4.
* density: 3.18 ( 0.07, -0.18) G / CM3.
[Edit]
The variety of fluorite
The jewelry industry is often divided into the variety of fluorite according to the process and color characteristics of fluorite;
[Edit]
The divide according to process use
according to process use, fluorite can be divided into two types: gem -level and jade -level.
* Gem level: Single crystal particles large, transparent, fresh color, because of low hardness, rarely used for jewelry, and mostly used for viewing and collecting.
* Jade grade: a granular or fiber -like collection, translucent, single color or different colors in a strip -shaped distribution. Mostly used for carving or making process ornaments.
[Edit]
In common colors to divide
The varieties such as green, purple, and blue.
* green fluorite: blue -green, green, light green. The more common ones are crystal clusters. In ancient times, there was a soft water green crystal that it was not used.
* purple fluorite: deep purple, purple. It is often distributed in a strip. In ancient times, it was known as the amethyst, and it was not used.
* blue fluorite: gray blue, green blue, light blue, often the surface is deep and the center is shallow.
* yellow fluorite: orange to yellow, often appearing in strips.
* colorless fluorite; colorless transparency to semi -transparent appears with single crystals or crystal clusters.
[Edit]
The optimization treatment of fluorite and its identification
* Heating treatment: Heating treatment is more common in fluorite, by heating, heating, heating It can turn dark blue to black fluorite into blue. Generally speaking, this heating treatment is difficult to identify, and its color is stable in environments below 300 ° C.
* Filling plastic or resin: Fill plastic or resin in fluorite. The main purpose is to heal the surface cracks so that it does not cause cracks during processing or wearing. The appraisal of the fluorite that is filled is mainly in the following aspects:
1.
2. The hot needle test can melt resin and plastic.
3. UV fluorescence observation, plastic and resin filled with characteristic fluorescence.
* Floor treatment: colorless fluorite can produce purple by radiation. The fluorite treated with radiation is extremely unstable, and the light will fade, so this treatment method does not have practical value.
[Edit]
The quality evaluation of fluorite
gemstone -level fluorite requires transparent, no mixed colors, and bright colors. The jade -level fluorite set requires that the granules are fine, dense, and large.
[Edit]
The introduction of fluorite
world gem -class fluorite is mainly distributed in the United States, Colombia, Canada, Britain, Namibia, And Austria, Switzerland, Italy, Germany, Czech Republic, Slovakia, former Soviet Union, Australia, South Africa and other places. For example, Illinois, Kentucky, etc. in the United States produces purple, violet, blue, yellow, brown equivalent and colorless transparent fluorite. stone. Canada Anda Lumbo -produced colorless transparent fluorite crystals. Convar, British, white, blue, violet, pale red brown and other fluorite. Namibia's emerald fluorite. Almost all provinces and regions in China have found fluorite resources. Among them, gem -level fluorite is mainly distributed in Zhejiang, Anhui, Jiangxi, Fujian, Henan, Hubei, Hunan, Guangxi, Sichuan, Guizhou, Qinghai, Xinjiang and other places.
The answer: If it is freedom-Manager 5th level 2-19 17: 37
Western-based encyclopedia, free encyclopedia
jump to:, search
Fluorite, also known as fluorite, is a mineral, its main component is calcium fluoride (CAF_2), which contains impurities compared Many, CA is often replaced by rare earth elements such as Y and CE. In addition, it also contains a small amount of Fe2O3, SIO2 and trace CL, O3, HE, etc. The fluorite in nature is often bright, and the hardness is lower than that of a knife. It can be used to prepare hydrogen fluoride:
CAF_2 H_2SO_4 = CASO_4 2HFuparrow
1 Basic nature of fluorite
o 1.1 Crystal system and crystalline habit
o 1.2 optical properties
o 1.3 mechanical properties
n n * 2 The variety of fluorite
o 2.1 Divide it according to the use of the process
o 2.2 Classification of common colors
o 2.3 optimization treatment of fluorite and its identification
o 2.4 The quality evaluation of fluorite
* 3 Brief introduction to the origin of fluorite
[Edit]
Basic nature
[Edit]
Crystal system and crystalline habits
Single crystals are mainly cube, a few are diamond -shaped duodang and octagonal body. The cube crystals often appear parallel to the edges -like stripes, and the collection body is granular, crystal cluster, strip -shaped, block, etc.
[Edit]
optic properties
* color: pure fluorite is colorless, but because it contains more Y, CE, CA, Wulingle elements, causing the fluorite structure to be vacant, producing color hearts, common colors are light green to dark green, blue, green, yellow, wine yellow, purple, violet, brown, rose red, dark red, dark red, dark red Wait.
* luster and transparency: glass luster; transparent to translucent.
* Light: Memorandum body.
* refractive index: 1.438 (± 0.01)
* multicolor: no multi -color.
* Luminousness: UV light can have purple or purple -red fluorescence under ultraviolet light. The alcohol lamp is heated, or the sun can be exposed in the sun. In addition, purple fluorite has the characteristics of friction and glow.
* spectrum absorption: The visible light absorption spectrum of fluorite is not characteristic and changes greatly, once absorbing. The absorption line is obvious.
[Edit]
It mechanical properties
* Lifting: Four groups of fluorite ｛111｝ Four groups are complete.
* hardness: HM = 4.
* density: 3.18 ( 0.07, -0.18) G / CM3.
[Edit]
The variety of fluorite
The jewelry industry is often divided into the variety of fluorite according to the process and color characteristics of fluorite;
[Edit]
The divide according to process use
according to process use, fluorite can be divided into two types: gem -level and jade -level.
* Gem level: Single crystal particles large, transparent, fresh color, because of low hardness, rarely used for jewelry, and mostly used for viewing and collecting.
* Jade grade: a granular or fiber -like collection, translucent, single color or different colors in a strip -shaped distribution. Mostly used for carving or making process ornaments.
[Edit]
In common colors to divide
The varieties such as green, purple, and blue.
* green fluorite: blue -green, green, light green. The more common ones are crystal clusters. In ancient times, there was a soft water green crystal that it was not used.
* purple fluorite: deep purple, purple. It is often distributed in a strip. In ancient times, it was known as the amethyst, and it was not used.
* blue fluorite: gray blue, green blue, light blue, often the surface is deep and the center is shallow.
* yellow fluorite: orange to yellow, often appearing in strips.
* colorless fluorite; colorless transparency to semi -transparent appears with single crystals or crystal clusters.
[Edit]
The optimization treatment of fluorite and its identification
* Heating treatment: Heating treatment is more common in fluorite, by heating, heating, heating It can turn dark blue to black fluorite into blue. Generally speaking, this heating treatment is difficult to identify, and its color is stable in environments below 300 ° C.
* Filling plastic or resin: Fill plastic or resin in fluorite. The main purpose is to heal the surface cracks so that it does not cause cracks during processing or wearing. The appraisal of the fluorite that is filled is mainly in the following aspects:
1.
2. The hot needle test can melt resin and plastic.
3. UV fluorescence observation, plastic and resin filled with characteristic fluorescence.
* Floor treatment: colorless fluorite can produce purple by radiation. The fluorite treated with radiation is extremely unstable, and the light will fade, so this treatment method does not have practical value.
[Edit]
The quality evaluation of fluorite
gemstone -level fluorite requires transparent, no mixed colors, and bright colors. The jade -level fluorite set requires that the granules are fine, dense, and large.
[Edit]
The introduction of fluorite
world gem -class fluorite is mainly distributed in the United States, Colombia, Canada, Britain, Namibia, And Austria, Switzerland, Italy, Germany, Czech Republic, Slovakia, former Soviet Union, Australia, South Africa and other places. For example, Illinois, Kentucky, etc. in the United States produces purple, violet, blue, yellow, brown equivalent and colorless transparent fluorite. stone. Canada Anda Lumbo -produced colorless transparent fluorite crystals. Convar, British, white, blue, violet, pale red brown and other fluorite. Namibia's emerald fluorite. Almost all provinces and regions in China have found fluorite resources. Among them, gem -level fluorite is mainly distributed in Zhejiang, Anhui, Jiangxi, Fujian, Henan, Hubei, Hunan, Guangxi, Sichuan, Guizhou, Qinghai, Xinjiang and other places.
Fluorite, also known as soft crystal, colorful gemstone, rainbow gem. Because its crystal clear is very similar to crystals, but the hardness is lower than that of crystals, it is also known as "soft green crystal". But generally do not advocate this artificial confusion, but directly called purple fluorite and green fluorite. Fluorite carving has a long history as early as Europe. Among them, the yellow -purple stripes produced by Deber County, UK, became known as "Blue John". Wine glasses and vases, ancient Romans superstitious that this wine glass will make people not drunk. There is an ancient workshop specialized in the United Kingdom, the carved valuable vases supply the royal nobles, and many major European museums have this exquisite fluorite crafts. Sui Zhu, also known as "Night Pearl" in Chinese history, is also known as "Night Pearl". According to research, it is likely to be fluorite with phosphorus light effects.
u003C!-[if!]-> u003C!-[Endif]->
[Features] The refractive index of fluorite is very bottom, only : 1.43, a weak glass luster. The hardness is: 3.5-4 radioactivity: none, the dispersion value is: 0.156. The scattered color of the diamond is: 0.044. The color of fluorite is very rich. Except for red and black, you can almost see any other colors.
[Physical effects] The energy of fluorite is tightly soft, which can help ease the skinny skin, reduce mental tension, and eliminate work pressure. Fluorite is a lucky stone in June of the Gregorian calendar.
[Spiritual effect]
(1) Corresponding to the sixth round -eyebrow heart wheel, the third eye zone between the two eyebrows, the corresponding color is not anxious, not slow, not slow, not slow, not slow, not slow, not slow, not slow, not slow, not to be slow. The purple and blue (the combination of red and blue, red represents warmth), the third eye is the center of spiritual power and higher intuition. Through the power of the eyebrow wheel, it can receive guidance, and then conducts a higher self -awareness to a higher self -self. , Let people experience ECG, Touring Touring Tour, and Cognition of previous lives.
(2) There are six tip of the octopus of fluorite, which happens to represent the sixth round. The tip can create a significant focus and agile thinking. When the thoughts are confused, and there is no clue, you may wish to hold the fluorite to help your thoughts clarify.
(3) Increasing people's aesthetics and affinity
(4) When the mood is not good, put a fluorite and then On the three rounds (solar wheels), the spirit can be boosted and calmed down.
(5) People who are easy to be nervous can use fluorite, put fluorite between the thighs or beside the sun nervous cluster, which can make people's skills more flexible, confident, calm and organized. Use when driving. It can also make people refreshing!
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Effective calcium CAF2 has no radiation