Black Virgin Valley Opal

Swordfish Mining Virgin Valley Opals raw black opal specimen. In Virgin Valley John Church as Swordfish Mining black, white, fire & clear opals with petrified woods and other lapidary grade gems. Crystals from the local area usually are hydrophane when dried for cutting. The blacks also may go opaque or even craze when dried. Cracking down if not slabbed is almost a promise when drying opal. The Nevada State Gemstone from the rockhounding crown of the state.