Pink ChalcedonyA pink chalcedony shows off its beauty. Chalcedonies include many types of cryptocrystalline quartz gems and feature a number of different colors. Geologists can tell a chalcedony ...

Privately-owned chalcedony gem SEAL has fine coloured intrusions to secure its uniqueness. Intaglio shows seated Zeus clothed in sacred robe holding over one shoulder a scepter symbolizing ...

Sarna, a jewelry artist and gem carver whose collection of several ... fighting fish the size of a grapefruit, sculpted in blue chalcedony from China, and a 15-pound quartz crystal, called Star ...