Agate and Carnelian Pin/Pendant: SS/14K

2.1” H x 1.1” W

Agate is a semiprecious silica mineral, a variety of chalcedony that occurs in bands of varying color and transparency. Agate is essentially quartz, and its physical properties are in general those of that mineral.

Carnelian is a variety of chalcedony and is a microcrystalline quartz. As a chalcedony, carnelian is formed from the intergrowth of two silica minerals with differing crystal structures: quartz and moganite. The reddish tints in the translucent stone are due to one of its ingredients: iron oxide. Carnelian can be confused with jasper, which is usually considered a chalcedony.