Hyalite Opal Geode UV Fluorescent Botryoidal Glass Opal on Matrix Raw Mineral Specimen Rocks and Minerals Mexico

Locality: Ranch Cuahutemoc, Chihuahua, MexicoDimensions: 2.12” x 1.63” x 1.25” (5.4 cm x 4.1 cm x 3.1 cm)Weight: 63.2 g (2.2 oz) *NOTE: This specimen is very UV reactive! The UV photo shows the specimen under shortwave ultraviolet light (blacklight)--all other photos are seen in indoor light. This is a gorgeous natural hyalite opal geode from Mexico, and it features unique and striking visual appeal! Mexico yields a wide variety of opals, including this beautiful "common" (lacking opalescence) variety. This piece features colorless to grey opal, growing on chalcedony and an aesthetic curved matrix of rhyolitic rock. The specimen has an interesting globular, botryoidal texture, and shows great crystallization and glassy texture. The most amazing aspect of hyalite opal is its strong yellow to green fluorescence! This opal is a very unique fluorescent specimen, and a fun piece to add to your opal collection! Durability: Hardness--6.5. Opals are prone to dryness and cracking, known as craz