Polychrome Jasper 60-90mm Flame - DS ROCK SHOP black opal By soaking the stone in

By soaking the stone in a non-toxic chemical solution

It is a particularly unusual gem because it exhibits a special optical property known as "tenebrescence

and igneous rocks

It was originally named for the visible inclusions of the mineral Cacoxenite

Green Garnet can be among the most valuable of garnets

Polychrome Jasper 60-90mm Flame - DS ROCK SHOP black opal By soaking the stone inPolychrome Jasper is considered one of the rarest Jaspers in the world. First discovered in 2006, it is exclusively sourced from a single small deposit in the desert of Madagascar. It is opaque and occurs in a wide variety of colors, with banding that creates vibrant landscape patterns throughout the stone. Sold individually. There are 2 specimens pictured to show that there are variations in the size and color.