Carnelian Agate

Hardness: 6.5-7, Color: reddish-orange to brown, Luster: waxy to vitreous, Crystal structure: cryptocrystalline, Cleavage: none, Specific gravity: 2.59-2.61

Forms from the deposition of silica in rock cavities or veins, often in igneous or sedimentary rocks. The reddish color is due to iron oxide impurities.

Commonly used in jewelry, decorative carvings, and as a collector's stone. Highly valued in ancient times for signet rings.

Carnelian was widely used during Roman times to make engraved gems for signet or seal rings for imprinting a seal with wax on correspondence.

Identified by its translucent to opaque reddish-orange color and smooth, waxy luster. Commonly found in Brazil, India, Siberia, and Germany. Collectors often seek out brightly colored, translucent specimens.