Zultanite 1 Natural Loose Gemstone (Diaspore) 3.7mm Round Cut 0.28 Ct. Cert of Auth B024 Naturally precious, color changing and trademarked gemstone Rare - Zultanite is only found in one place in the world Comes with Authenticity Guarantee from Zultgems, the authorized distributor of Zultanite Will arrive well packaged in a gemstone display container via Priority Mail 7 available. Please email if additional size/shapes are needed