Dioptase - Specimen fire opal oregon upright cluster of elongated white

upright cluster of elongated white to colorless crystals with a distinctly bladed

5cm x 1cm - 2

Kids can excavate and extract their own fossil from within a plaster block

5cm x 4cm 1

The banding seen in this piece reflects changes in chemical conditions during growth

Dioptase - Specimen fire opal oregon upright cluster of elongated whiteMined from: Renville, Pool Malebo area, Kongo Central, Democratic Republic of the Congo Description: This one of a kind dioptase specimen has a more open crystal habit than the previous pieces, with individual crystals standing out clearly from the dark matrix. The color is a vivid blue green with strong transparency in several points, and the larger crystals rise prominently above a dense bed of smaller growth. The contrast here is especially strong: