Crystal with ankangite 3.58 ct

Colourless crystal with contrasting metallic black inclusions of the rare mineral ankangite. The chemical composition of ankangite is Ba(Ti, V, Cr)8O16. This extremely aesthetic stone with fancy cut comes from the Curvelo locality in the state of Minas Gerais, Brazil. The stone is suitable for modern jewellery or for avid collectors of unusual gemstones.