Reference: FLR1
Product name: Natural Fluorite, Shape: Rectangular, Color: Light Green, Stone size mm: 10.00x8.00, Stone Carat Weight: 3.65, Stone clarity: Visible inclusions, Treatment: Untreated, Origin: Mongolia
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Fluorite 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 colourless and transparent, both in visible and ultraviolet light, but impurities usually make it a colorful mineral and the stone has ornamental and si de bijuterie. 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 opaque for use.
In the context of archeology, gemmology, classical studies, and Egyptology, the Latin terms murrina and myrrhina refer to fluorite. In book 37 of his Naturalis Historia, Pliny the Elder describes it as a precious stone with purple and white mottling, whose objects carved from it, the Romans prize.
One of the most famous of the older-known localities of fluorite is Castleton in Derbyshire, England, where, under the name of "Derbyshire Blue John", purple-blue fluorite was extracted from several mines or caves. During the 19th century, this attractive fluorite was mined for its ornamental value. The mineral Blue John is now scarce, and only a few hundred kilograms are mined each year for ornamental and lapidary use. Mining still takes place in Blue John Cavern and Treak Cliff Cavern. Recently discovered deposits in China have produced fluorite with coloring and banding similar to the classic Blue John stone.
Data sheet
Product name: Natural Fluorite, Shape: Rectangular, Color: Light Green, Stone size mm: 10.00x8.00, Stone Carat Weight: 3.65, Stone clarity: Visible inclusions, Treatment: Untreated, Origin: Mongolia
Product name: Natural Sapphire, Shape: Oval, Color: Yellow, Stone size mm: 7.40x4.80x4.80, Stone weight: 1.65, Stone clarity: Visible inclusions, Treatment: Heat treated, Origin: Sri Lanka
Product Name: Natural Peridot, Shape: Cushion, Colour: Green, Stone Dimensions: 10.20x8.00 mm, Stone Weight: 3.80 carats, Stone Clarity: Visible Inclusions, Treatment: Untreated, Origin: Pakistan
Product name: Natural Topaz, Shape: Baguette, Color: Swiss Blue, Size 9.90x7.90 mm, Weight: 3.90 carats, Clarity: No visible inclusions, Treatment: Treated, Origin: Brazil
Product name: Natural Garnet, Shape: Rectangle, Color: Dark Pink, Stone size: 5.50x4.80 mm, Weight: 0.90 carat, Stone clarity: No visible inclusions, Treatment: Untreated, Origin: Sri Lanka
Product name: Natural African Amethyst, Shape: Rectangular, Color: Violet, Size: 6.20x4.20 mm, Weight: 0.60 carat, Clarity: No visible inclusions, Treatment: Treated, Origin: Zambia
Product Name: Natural Emerald, Shape: Round, Colour: Green, Stone Size: 4.20 mm, Weight: 0.35 Carat, Stone Clarity: Visible Inclusions and Fractures, Treatment: Untreated, Remarks: Craft Cut, Origin: Zambia
Product name: Natural Tourmaline, Shape: Oval, Color: Brown, Size: 6.90x5.70 mm, Weight: 1.05 carats, Clarity: Visible inclusions, Treatment: Untreated, Origin: Pakistan
Product name: Natural Sapphire, Shape: Round, Color: Light Yellow, Stone size: 5.90 mm, Weight: 1.05 carat, Treatment: Heat treated, Stone clarity: Semi-opaque No visible inclusions, Origin: Sri Lanka
Stone type: Natural Aquamarine, Shape: Emerald, Colour: Light Blue, Stone size mm: 7.90x5.00x3.00, Weight carat: 1.00, Stone Clarity: Visible inclusions
Product name: Natural Spinel, Shape: Oval, Color: Dark Blue, Size: 7.00x5.00 mm, Weight: 0.85 carat, Treatment: Untreated, Clarity: No visible inclusions, Origin: Sri Lanka
Name: Natural Spinel, Shape: Pear, Color: Dark Blue, Size: 6.70x5.60 mm, Weight: 0.80 carat, Clarity: Visible inclusions and fractures, Treatment: Untreated, Origin: Sri Lanka
Product: Natural Opal, Shape: Cushion, Color: White Yellow, Size: 7.00x6.90 mm, Weight: 0.80, Clarity: No visible inclusions, Treatment: Untreated, Origin: Ethiopia
Product Name: Natural Tourmaline, Color: Green, Shape: Pear, Stone Size: 7.20x4.50 mm, Weight: 1.00 carat, Stone Clarity: Visible Inclusions, Origin: Afghanistan
Product Name: Natural Sapphire, Shape: Pear, Colour: Yellow, Stone Dimensions mm: 7.00x5.00, Stone Carat Weight: 1.05, Stone Clarity: Visible Inclusions, Treatment: Heat Treated, Origin: Sri Lanka
Product: Natural Opal, Shape: Oval caboson, Color: White Yellow, Size: 6.00x4.00 mm, Weight: 0.25 carat, Clarity: No visible inclusions, Treatment: Untreated, Origin: Ethiopia
Stone type: Natural Amethyst, Shape: Emerald, Color: Mauve, Weight carat: 0.50, Treatment: Untreated, Source: Brazil, Stone Clarity: Eye clean, Stone size mm: 5.80x4.00 - 6.20x4.10, Sale information: Price by piece
Stone type: Natural Topaz, Shape: Emerald, Colour: Blue Swiss, Stone size mm: 5.80x3.90 - 6.00x4.00, Weight carat: 0.60 - 0.70, Stone Clarity: Eye clean
