Gem silica is the trade name for this material- Hard and clear chalcedony base with inclusions of chrysocolla (blue) and malachite (green).
The slab this cab was cut from kinda had the look already, and I couldn't unsee the claw! Had to go for it. Shaped and polished to feature the void of the botroydal growth around the claw center.
Availabe as a loose cab, or i can craft it into something for you. Either way, should make up an interesting project!
Approximate size- 35.5 x 21 x 4.5 mm, 23 carats
Andean opal has a gel base, looking like water frozen in still life. This one is translucent with hints of blue, green, and white. Carved in a freeform drop shape....
High clarity with smoky exterior, very fine shadow banding when you get up close. The center shows the bubbly botroydal formation. Would make a great center for a pendant, or...
Green bubbly variscite makes up this lush cab. Gemmy unstabilized material, shows some translucency at the edges. Very high grade Cut from old stock material mined in the 70's. More...