28.7 CTS DIOPTASE SPECIMEN-EMERALD GREEN [ST8431]
- SKU
- Dimenzije (mm)
- x x mm
- Težina (cts)
- Certified Gemstones
- Ne
- Shape
- Emerald
- Boje
-
SEDA GEMS
RARE DIOPTASE
This is a natural untreated specimen of Dioptase on its natural matrix from Kazakhstan
Great specimen.
Weight 28.7 cts app
Size 20 X 17 X 15 mm app
Dioptase is an intense emerald-green to bluish-green copper cyclosilicate mineral. It is transparent to translucent. Its luster is vitreous to sub-adamantine.
Late in the 18th century, copper miners at the Altyn-Tyube (Altyn-Tube) mine, Karagandy Province,Kazakhstan thought they found an emerald deposit of their dreams. They found fantastic cavities in quartz veins in a limestone, filled with thousands of lustrous emerald-green transparent crystals. The crystals were dispatched to Moscow, Russia for analysis as they thought they were Emeralds.
Dioptase is a very rare mineral found mostly in desert regions where it forms as a secondary mineral in the oxidized zone of copper sulfide mineral deposits. However, the process of its formation is not simple, the oxidation of copper sulfides should be insufficient to crystallize dioptase as silica is normally minutely soluble in water except at highly alkaline pH. The oxidation of sulfides will generate highly acidic fluids rich in sulfuric acid that should suppress silica solubility. However, in dry climates and with enough time, especially in areas of a mineral deposit where acids are buffered by carbonate, minute quantities of silica may react with dissolved copper forming
- SKU
- Dimenzije (mm)
- x x mm
- Težina (cts)
- Certified Gemstones
- Ne
- Shape
- Emerald
- Boje
-
SEDA GEMS
RARE DIOPTASE
This is a natural untreated specimen of Dioptase on its natural matrix from Kazakhstan
Great specimen.
Weight 28.7 cts app
Size 20 X 17 X 15 mm app
Dioptase is an intense emerald-green to bluish-green copper cyclosilicate mineral. It is transparent to translucent. Its luster is vitreous to sub-adamantine.
Late in the 18th century, copper miners at the Altyn-Tyube (Altyn-Tube) mine, Karagandy Province,Kazakhstan thought they found an emerald deposit of their dreams. They found fantastic cavities in quartz veins in a limestone, filled with thousands of lustrous emerald-green transparent crystals. The crystals were dispatched to Moscow, Russia for analysis as they thought they were Emeralds.
Dioptase is a very rare mineral found mostly in desert regions where it forms as a secondary mineral in the oxidized zone of copper sulfide mineral deposits. However, the process of its formation is not simple, the oxidation of copper sulfides should be insufficient to crystallize dioptase as silica is normally minutely soluble in water except at highly alkaline pH. The oxidation of sulfides will generate highly acidic fluids rich in sulfuric acid that should suppress silica solubility. However, in dry climates and with enough time, especially in areas of a mineral deposit where acids are buffered by carbonate, minute quantities of silica may react with dissolved copper forming
Pružatelj usluge dostave | Dostava u Australia | Dostava u ostatak svijeta |
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FedEx | $12.00 / :dani dani | $39.00 / :dani dani |
:zemlja
FedEx je snižen na $12.00 na narudžbe s 2 ili više artikala
Ostatak svijeta
FedEx je snižen na $39.00 na narudžbe s 2 ili više artikala
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Registered Shipping | $9.00 / :dani dani | $16.00 / :dani dani |
:zemlja
Registered Shipping je snižen na $9.00 na narudžbe s 2 ili više artikala
Ostatak svijeta
Registered Shipping je snižen na $16.00 na narudžbe s 2 ili više artikala
|
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Pozitivan
AAAA+++ Very Happy! Just like the pic.
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Pozitivan
AAAA+++ Very Happy! Just like the pic.
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Pozitivan
Beautiful
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Pozitivan
Very nice stone
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