Ametrine 18x28mm Oval - 15-16 Inch Faceted Bicone including browns

including browns

famed mineralogist and jeweler George Frederick Kunz

Terahertz is a spectacular man made ore

These inclusions give it a glistening effect termed “aventurescence

Mined in: Madagascar

Ametrine 18x28mm Oval - 15-16 Inch Faceted Bicone including brownsAmetrine is quartz that occurs in bands of purple and yellow. As the name suggests, it is a combination of Amethyst and Citrine. The different colored zones in the stone result from different oxidation states of iron, due to exposure to different temperatures during its formation. It is believed that Ametrine was first introduced to Europe by a conquistadors gift from Bolivia to the Spanish Queen.