Gem silica , from Garut Indonesia. This piece has such a great ocean blue color. The dendrite pattern inside is very unique. Gem silica is a blue color chalcedony. Very rare on earth. It seem to have a alluring color that is hard to resist. Very calming. This would make a great ring or pendant. We are letting this go for a great price.

Very gemmy and hard.

9ct. 20.4mm. x 12.8mm.