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44.85 carats, Natural blue Fluorite.
- SKU
- Dimensions (mm)
- 26.370 x 19.760 x 9.910mm
- Weight (cts)
- 44.850
- Treatment
- No Treatment
- Type
- Faceted
- Colours
-
Fluorite (also called fluorspar) is the mineral form of calcium fluoride, CaF2. It belongs to the halide minerals. It crystallizes in isometric cubic habit, although octahedral and more complex isometric forms are not uncommon.
The Mohs scale of mineral hardness, based on scratch hardness comparison, defines value 4 as Fluorite.
Pure fluorite is transparent, both in visible and ultraviolet light, but impurities usually make it a colorful mineral and the stone has ornamental and lapidary uses. Industrially, fluorite is used as a flux for smelting, and in the production of certain glasses and enamels. The purest grades of fluorite are a source of fluoride for hydrofluoric acid manufacture, which is the intermediate source of most fluorine-containing fine chemicals. Optically clear transparent fluorite lenses have low dispersion, so lenses made from it exhibit less chromatic aberration, making them valuable in microscopes and telescopes. Fluorite optics are also usable in the far-ultraviolet and mid-infrared ranges, where conventional glasses are too absorbent for use.
- SKU
- Dimensions (mm)
- 26.370 x 19.760 x 9.910 mm
- Weight (cts)
- 44.850
- Treatment
- No Treatment
- Type
- Faceted
- Colours
-
Fluorite (also called fluorspar) is the mineral form of calcium fluoride, CaF2. It belongs to the halide minerals. It crystallizes in isometric cubic habit, although octahedral and more complex isometric forms are not uncommon.
The Mohs scale of mineral hardness, based on scratch hardness comparison, defines value 4 as Fluorite.
Pure fluorite is transparent, both in visible and ultraviolet light, but impurities usually make it a colorful mineral and the stone has ornamental and lapidary uses. Industrially, fluorite is used as a flux for smelting, and in the production of certain glasses and enamels. The purest grades of fluorite are a source of fluoride for hydrofluoric acid manufacture, which is the intermediate source of most fluorine-containing fine chemicals. Optically clear transparent fluorite lenses have low dispersion, so lenses made from it exhibit less chromatic aberration, making them valuable in microscopes and telescopes. Fluorite optics are also usable in the far-ultraviolet and mid-infrared ranges, where conventional glasses are too absorbent for use.
Shipping provider | Shipping to United Kingdom | Shipping to rest of world |
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Standard Shipping - Tracked | $8.00 / 20 days | $15.00 / 21 days |
United Kingdom
Standard Shipping - Tracked is discounted to $16.00 on orders with 2 or more items
Rest of the world
Standard Shipping - Tracked is discounted to $30.00 on orders with 2 or more items
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||
FedEx | $40.00 / 10 days | $45.00 / 10 days |
United Kingdom
FedEx is discounted to $40.00 on orders with 2 or more items
Rest of the world
FedEx is discounted to $45.00 on orders with 2 or more items
|
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Positive
Very pretty stone. Hope to do business with this seller again.
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Positive
Beautiful. Thank you.
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Positive
Beautiful vivid clear stones
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