SEDA JEWELERY

RARE DIOPTASE PENDANT

This is a natural untreated specimen on its natural matrix from Kazakhstan.This is a rare stone which looks like a top green emerald.

Prong set

Quality workmanship.

Silver stamped 925

Weight stone 21.00 cts app

Weight of silver used 1.90 grams  app

 Size of stone  21 x 21 mm app

Total Weight: 30.50 cts app.

Our jewelery manafacturing is contracted out to one factory in asia where i supply  both the silver and stones to be set.This gives me control of  the quality of both the silver and stones.

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 dioptase and chrysocolla