Chalcedony is the family of Cryptocrystalline (small crystals) and is derived from one of its classic sources, Chalcedon , a port of Bithynia an ancient region in the Roman Province in modern day Turkey. A gemstone of antiquity Chalcedony has played an important role in Mesopotamian -modern day Iraq, Hittite-modern day Turkey, Egyptian and Greek civilization. Romans used Chalcedony as magic amulets, seals, signets, cameos and intaglios setting them in rings, brooches, bracelets, fibula (ornamented clasps) and necklaces. Popular variety of Chalcedony quartz gemstone are Agate, Aventurine, Chrysoprase, Jasper and Onyx.
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