A crystal or crystalline solid is a solid material whose constituents, such as atoms, molecules or ions, are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions. In addition, macroscopic single crystals are usually identifiable by their geometrical shape, consisting of flat faces with specific, characteristic orientations.
CRYSTAL CATEGORIES
CRYSTAL
Very nice Celestite with good blue color. It has smaller crystals about 1-2 cm in length.
Location: Democratic Republic of the Congo
This is a fantastic Purple Fluorite and Dog Tooth Calcite Stalactite specimen.
Location: Minas Gerais, Brazil
Location: Mina Ojuela, Mapimi, Durango, Mexico
Location: ErongoMassif,Omaruru Dist., Erongo Region, Namibia
Location: Baikai Region, Siberia, Russia
Radioactive! This is one of the radioactive species from Namibia. It has very nicely formed crystals sitting on matrix.
