Opal (var: Opal-AN) / (var: Hyalite Opal) (“Blood Vessel Opal”) Mogok this specimen is a fine

this specimen is a fine pseudomorph / cast consisting of hollow and thin cavities of Quartz replacing the original mineral

and the only point of contact is on the back/bottom where it detached from the pocket wall

A nice representative piece from this famous discovery

This incredibly three-dimensional and sculptural display specimen features a beautiful

Opal (var: Opal-AN) / (var: Hyalite Opal) (“Blood Vessel Opal”) Mogok this specimen is a fineA rarely seen matrix specimen of Hyalite from San Luis Potosi, Mexico featuring bead like gemmy, colorless spheres which are included with a small amount of orange iron oxide to give it the blood vessel like inclusions, hence the nickname Blood Vessel Opal. Interestingly enough, the piece has a dual texture effect where some of the globules are perfectly smooth, while others have an alligator skin appearance on the surface. One can spend a great deal