You’re bidding on an absolute rarity! Untreated TANZANITE Pleochroism, Blue Purple and Green, This stunning gemmy Tanzanite crystal boasts a lovely shape and an exceptionally rare Pleochroism colors. This piece is unimaginably rare because change from purple blue to some green. This phenomenon is called pleochroism. Completely untreated, this gem showcases a breathtaking Pleochroism hue with remarkable transparency. Featuring an exceptional size and top-tier quality, this Tanzanite crystal is a true collector’s gem. Don’t miss the chance to own this unique and rare treasure! Natural completely untreated weight : 2,47 gram / 12,35 ct size : 15*12*8 mm