Reference: OPU6
Product name: Natural Opal, Shape: Oval cabochon, Color: Yellow Orange, Stone size mm: 6.90x4.90 mm, Weight: 0.50 carat, Stone clarity: Opaque without visible inclusions, Treatment: Untreated, Iridescence: Medium, Origin: Ethiopia
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Opal (from Latin opalus which probably comes from Sanskrit upalus = "precious stone") is an exceptional mineral that is only amorphous, being a hydrated silicate with the chemical formula SiO2*nH2O.
As the percentage of water can reach 25% as an amorphous solid body, the opal appears like glass without having a crystalline structure.
The mineral frequently appears in nature as the filling of a vein, or as granules. Opals are very rare, so they are not exploited industrially. Opal has been found on all continents but 97% of opals come from Coober Pedy, South Australia. Not long ago, significant opal deposits were discovered in the Welo region of Ethiopia
The color of the mineral is very variable, from colorless to grey, red, brown, yellow, rarely due to some impurities, orange or reddish copper (called "fire opals").
The "wood opal" variant is formed by the phenomenon of impregnating wood with silicates. Hydrophane or "water opal" exhibits a play of light colors similar to water. Roman culture was considered the "stone of love" or the "stone of hope".
Data sheet
Product name: Natural Opal, Shape: Oval cabochon, Color: Yellow Orange, Stone size mm: 6.90x4.90 mm, Weight: 0.50 carat, Stone clarity: Opaque without visible inclusions, Treatment: Untreated, Iridescence: Medium, Origin: Ethiopia
Product: Natural Spinel, Shape: Oval, Color: Dark Blue, Size: 6.20x4.80 mm, Weight: 0.75 carat, Clarity: No visible inclusions, Treatment: Untreated, Origin: Sri Lanka
Product name: Natural Zircon, Shape: Oval, Color: Brown, Stone size mm: 10.50x7.40, Stone carat weight: 4.30, Stone clarity: No visible inclusions, Treatment: Untreated, Origin: Sri Lanka
Product name: Natural Spinel, Shape: Cushion, Color: Dark Mauve, Size: 7.10x6.10 mm, Weight: 1.15 carats, Clarity: No visible inclusions, Treatment: Untreated, Origin: Sri Lanka
Stone type: Natural cultured pearl, Shape: Round, Color: Light Pinkish, Stone size mm: 9.70 - 10.10, Weight grams: 0.95 - 1.05, Pearl type: Button, Processing: Semi-drilled, Symmetry: Good
Product name: Natural Peridot, Shape: Oval, Color: Green, Stone dimensions mm: 7.90x5.90 - 8.00x6.00, Stone carat weight: 1.05 - 1.40, Stone clarity: No visible inclusions, Treatment: Untreated, Origin: Pakistan
Stone type: Natural Topaz, Shape: Cushion, Colour: Light Brown, Stone size mm: 13.50x10.90x8.60, Weight carat: 10.40, Stone Clarity: Eye clean
Product name: Natural Onyx, Shape: Oval, Color: Black, Stone dimensions mm: 8.00x6.00 - 8.20x6.10, Staone Carat Weight: 0.90, Stone clarity: No visible inclusions. Opaque appearance, Treatment: Treated, Origin: India
Stone type: Natural cultured pearl, Shape: Round, Color: Champagne, Treatment: Untreated, Additional details: Hi quality stone, Stone size mm: 9.50 - 10.20, Sale information: Price by piece, Pearl type: Button, Processing: Semi-drilled, Symmetry: Good, Weght grams: 1.00 - 1.20
Product name: Natural Peridot, Shape: Rectangle, Color: Light Green, Stone size: 7.50x5.80 - 7.70x5.70 mm, Weight: 1.40 carats, Stone clarity: No visible inclusions, Treatment: Untreated, Origin: Pakistan
Product name: Natural Topaz, Shape: Cushion, Colour: Light Brown, Stone size mm: 13.70x11.60x9.40, Stone weight carat: 12.30, Stone clarity: No visible inclusions, Treatment: Untreated, Origin: Pakistan
Product: Natural Kianite, Shape: Round, Color: Blue, Size: 6.20 mm, Weight: 1.20 carats, Clarity: Visible inclusions, Treatment: Untreated, Origin: Nepal
