4.16 ct natural bolivian Ametrine loose gemstone

For sale this natural bicolor bolivian Ametrine loose gemstone cut in an octagonal shape with  step cut also called emerald cut, this amazing gemstone show a beautiful yellow-purple bicolor typical for this rare variety from the Quartz mineral family, that can be mined only in Bolivia. This bicolor ametrine quartz is totally genuine and untreated present an attractive color tone and nice transparent clarity valued VVS without visible inclusions into the crystal. This stone weight over three carat and has well proportioned shape with good size that make it perfect to be set into an elegant and exclusive jewel.