Chalcedony (Marbled) 10-13mm Chips - 15-16 Inch Stone Type_Hydrogrossular Garnet Spinel is a hard vitreous

Spinel is a hard vitreous magnesium aluminum oxide

and comes in a range of other colors

Sonora Jasper is the trade name for Sonora Dendritic

Mookaite is formed by the ancient skeletal remains of radiolaria

the brown spaces creating new continents aside the unfamiliar oceans

Chalcedony (Marbled) 10-13mm Chips - 15-16 Inch Stone Type_Hydrogrossular Garnet Spinel is a hard vitreousBlue Chalcedony is a naturally occurring soft blue translucent stone. It is a member of the Quartz family, a form of silica with a cryptocrystalline structure that incorporates Moganite along with the Quartz. Known in antiquity as the Speakers Stone, it is believed to have been worn Cicero, the great Roman orator. These strands were cut into beads with some of the material the Chalcedony was mined out of remaining, creating a unique "marbled" look.