Carnelian is chalcedony warmed by iron into translucent flame — apricot to deep rust-red. One of humanity’s oldest gems, engraved from Mesopotamia to Rome, it remains beloved for cabochons and beads. India and Madagascar supply most material; hardness about 7.Each carnelian at GEMIC Institute is natural, laboratory-certified and photographed piece by piece. All stones are unique; orders ship worldwide with tracking and our 30-day inspection period.