13.81ct Wello Ethiopian Opal Rough Specimen other Measurement: 63mm x 51mm x

Measurement: 63mm x 51mm x 55mm

This amazing crystal has a great green color

You can see it also has many beautiful large crystals that span across it's dark grey matrix

yet its thin overall

13.81ct Wello Ethiopian Opal Rough Specimen other Measurement: 63mm x 51mm xRough Welo Ethiopian hydrophane opal mineral specimen with a beautiful play of color. Not only that, but this piece is very fine cutting carving material that should have a good yield. We recommend that this opal material NOT be submerged in water (unless it is being cut, water will keep it cool), and it should never have any oils applied to it. Also, due to the hydrophane nature of this opal, the weight can vary slightly with humidity. We consider