Brazilian agate painstakingly carved into grapes by a Chinese artisan. This bunch weighs about 2 pounds. © All That Glitters. Used with permission.
Chalcedony Value, Price, and Jewelry Information
Technically, chalcedony (kal SED’ uh nee) is any form of microcrystalline or cryptocrystalline quartz, (meaning any form of quartz whose crystals…