Quartz Geode

Hardness of 7 on the Mohs scale, transparent to white color, vitreous luster, hexagonal crystal system, and specific gravity of 2.65.

Formed when silica-rich groundwater precipitates quartz crystals inside hollow cavities of sedimentary or volcanic rocks over millions of years.

Used in mineral collections, decorative display pieces, lapidary arts, and gemstone jewelry.

Quartz geodes form from mineral-laden groundwater slowly depositing microscopic crystals layer by layer along the inner walls of a cavity.

Easily identified by its rough exterior rock matrix contrasting with a sparkling interior crystal lining. Commonly found in limestone and volcanic formations worldwide.