Hubnerite on Matrix | 18.2 grams | Ruby Mine, San Juan Co., Colorado Schorl This beautiful piece is completely

This beautiful piece is completely surrounded by a lava crust

03-00026-E - 34x28 mm / 111

Its color ranges from a vivid green to an intense greenish-blue

and maintain focus and clarity

Hubnerite on Matrix | 18.2 grams | Ruby Mine, San Juan Co., Colorado Schorl This beautiful piece is completelyHubnerite is a rare manganese tungstate mineral and the manganese dominant member of the wolframite series. It typically forms dark reddish brown to nearly black blade like crystals with a submetallic to silky luster. This dense mineral is an important tungsten ore and is commonly found in high temperature hydrothermal veins, often with quartz and fluorite. Specimens from Peru and Colorado are especially well known for their sharp, aesthetic crystal