Gem silica 5.92 ct.
Gem silica
is most expensive and rare type of chalcedony colored by chrysocolla. When color and translucency are in high grade , the price is higher.
It is found in several part of the world ,one of the most famous comes from Arizona like this gem here.The color is blue-greenish due to copper content.The hardness is 6.5 .
Size: 15.2x13x3.6 mm.
Weight: 5.92 ct.
CODE#6251
- Origin
- Arizona