1.22 ct Five-star Cushion Cut (6 x 6 mm) Brazil Paraiba Blue Apatite Natural Gemstone. Rare Stone! Unheated / Untreated Paraiba Blue Orgin From Brazil. Color Paraiba Blue. History – Apatite colors include transparent to opaque in yellow, blue, violet, green, and colorless.
11.60 ct Excellent Fancy (23.51 x 11.38mm) Australian Koroit Boulder Opal
11.60 ct Excellent Fancy Shape (24 x 11 mm) Multi Color Australian Koroit Boulder Opal Natural Loose Gemstone. Boulder Opal. Mohs Hardness: 5.5-6.5 Found in Australia History: Opal is a semi-transparent solidified mineral composed of silicon and water.