Recently I purchased an estate of lapidary supplies sourced in the 70's, been slowly cutting up and discovering new treasures. The chrysocolla in this material had fully darkened to black and green, was surprised with the bright colors within! The underside still has some of that black, while the top has much brighter colors!
Chrysocolla is the blue areas, green is malachite
This stone is not stabilized, but likely could have benefit from it! The stone is mostly soft with some harder areas. Softer areas pitted, but denser harder areas polished, making the polish uneven and veiny. Maybe that's no good for some people, but others may appreciate the natural texture.
As mentioned, it's a softer stone, so only a pendant or brooch would be suitable to avoid any damage from wear.
Approximate size: 38 x 41 x 6.3 mm, 86 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...
Fun shaped cabs in assorted materials, each one having it's own characteristics. Grouped together for shape and color. Elongated shapes, all great size for pendants. Top left: white and green...