Genuine 14k Yellow Gold 4mm Round Imitation Blue Zircon Birthstone Charm14K Yellow Gold 4mm Round Imitation Blue Zircon Birthstone Charm Crafted of 14k yellow gold, this pretty imitation blue zircon charm would make a perfect addition to a charm bracelet, or to add to pendants on a special necklace to create a pop of color. Blue Zircon is December's birthstone and features a bright aqua blue color. The stone on this charm measures 4 mm round. This would make a perfect addition to a birthday or Mother's Day gift. Details: