Carnelian Rough Stones can be availed from us. Carnelian is a brownish-red to red-orange variety of chalcedony or cryptocrystalline quartz. Carnelian Rough Stones possess refractive index of 1.530 to 1.540. The Carnelian Rough Stones greatly range in clarity from translucent to opaque. Carnelian Rough Stones are used for cabochons and beads. Also, they are carved to produce intaglios, cameos and other sculptures.