Hyalite Opal Specimen DX1364 egg Its pleochroic nature

Its pleochroic nature

Pyrite and Calcite after Fluorite

Weight: 154 grams

This piece is from one of the earlier finds of this material from 2020

The most common mineral found within the geodes is quartz in various colors: clear (rock crystal)

Hyalite Opal Specimen DX1364 egg Its pleochroic natureHyalite Opal Approx. Dimensions: 2. 5 x 2 x 1" Approx. Weight: 69 grams Locality: San Luis Potosi, Mexico Acrylic stand and putty not included This specimen is shown under a short wave UV light in the first photo, and a long wave UV light in the second to last photo. Hyalite Opal was first discovered by German geologist Abraham Gottlob Werner in the late 1700's. He gave it the name hyalite from the Greek "hialos", meaning glass. It has mostly the same