1.70 Carats, 6 prong setting. Genuine Sky Blue Topaz Round Sterling Silver 925 Earrings. Excellent VVS quality gemstones. 5mm round sky blue topaz sterling silver earrings 1.70cts (6 prong setting) Color: Sky Blue Clarity: VVS Cut: Excellent Shape: Round Luster: Very Good Treatment : Irradiation Origin: Brazil Metal: 925 sterling silver