Explore museum-quality mineral specimens from around the world. Each piece has been carefully selected by Grant Powell for its exceptional beauty, rarity, and scientific significance.
Stibnite, Chalcedony (Quartz)
Stibnite on Chalcedony
Baia Sprie, Maramure County, Romania
Calcite, Heulandite, Chalcedony (Quartz)
Calcite with Pink Heulandite and Druzy Chalcedony
Nasik District, Maharashtra, India
