Ametrine 6mm Round A Grade - 15-16 Inch Pebble Tourmaline is classified as a

Tourmaline is classified as a semiprecious stone and occurs in a vast array of colors

Moonstone occurs in naturally in shades of white

Mined in: Madagascar

Like all other natural turquoise

colored by trace amounts of chromium and/or vanadium to range in hue from yellow to green to blue to green

Ametrine 6mm Round A Grade - 15-16 Inch Pebble Tourmaline is classified as aAmetrine 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.