Blue 7x10 MM Emerald Blue Sapphire (GF) Faceted Loose Gemstones for Birth month April for Beauty. Blue Sapphire (GF) Luster Translucent with Smooth Faceted Medium Emerald for Birthsign Cancer. Precious Glass Filled Loose Gemstones Approx Weight is in between 2.2-3.2 Carat.