199ct Amazing Rough Opal Specimen stilbite The smokey amethyst color transitions

The smokey amethyst color transitions into colorless quartz crystal about halfway through this specimen

In this piece

We consider this piece to be a Large Cabinet sized (LGC) mineral specimen

Tanzania    Measurement: 15

Quanzhou Prefecture

199ct Amazing Rough Opal Specimen stilbite The smokey amethyst color transitionsThis is a very large Welo Ethiopian hydrophane opal mineral specimen with an amazing play of color. It has a great aesthetic with the rock on both sides, but displaying a nice line of opal through the body of the piece. Not only that, if you get tired of it as a specimen, this piece is very fine cutting material that will have a good yield. Watch Video to see the play of color and full view of this opal. We recommend that this opal material NOT be