Types of Chalcedony - Colored Gemstones Guide A form of microcrystalline quartz, the chalcedony family of stone encompasses a dozen different colored gemstone varieties. Some of these varieties include agate, carnelian, chrysoprase, onyx, jasper, blue chalcedony, pink chalcedony, and aqua chalcedony. https://www.rananjayexports.com/blog/types-of-chalcedony #Chalcedony #TypesofChalcedony #GemstoneJewelry #Fashion