Blue Topaz, Onyx & Diamond Earrings Specifications:Metal: 18k White GoldMain Stone: Topaz BlueMain Stone Shape: BarrelMain Stone Weight: 11x7mm, 9ct, AAASide Stone 1: Onyx BlackSide Stone 2: Round DiamondSide Stone Weight 2: 0.31ctTotal Weight of piece: 18.62gTopaz is the birthstone for December and symbolizes love and affection. It has been said that it adds to one’s sweetness and disposition.Topaz gets its name from a Greek word Topaz-ion meaning fire and the isle named St. John’s Island.Topaz is an ideal gemstone with its hardness of 8.0 on the scale and its desirable colors make it extremely popular. The availability and abundance of this gemstone adds to its popularity.FAQs:Q: What stones are in these earrings?A: Barrel-cut blue topaz (11x7mm, 9ct total, AAA), black onyx, and round diamonds totaling 0.31ct.Q: What metal and weight are they?A: They are 18K white gold with a total weight of 18.62g.Q: How do I care for them?A: Topaz and diamond are durable. Clean with a soft cloth and warm water with mild soap, then dry thoroughly.