18 novembre 2008
Precious 27,90ct tanzanite (Zoisit). Tanzania,
Precious 27,90ct tanzanite (Zoisit). Tanzania, 1 oval natural crimson-blue tanzanite (Zoisit) in star-cut ca.27,90ct, 20,30x16,46x11,64mm. DSEF, Gemstone laboratory report no.018693, Idar-Oberstein 2008. No indication of heat treatment. Estimation : 18...