Tanzanite Tiny Unset Loose Gem Faceted Oval Light Blue 6mm (2) Tanzanite genuine oval unset gemstones 2 About 0.40ct each about 4mm x 6mm x 2mm, tiny Light Blue colors, highly transparent, heat treated Small Faceted ovals suitable for fine jewelry 1 specified buys 2, 3 buys 6, etc.