Ametrine 5x10-20mm Top Drill Teeth - 15-16 Inch 8x10-10x12mm Turquoise is a naturally soft

Turquoise is a naturally soft stone

Chrysoprase is a bright apple green

Unlike other forms of opal

Isaac’s Cathedral in St

including shiller — a sometimes iridescent bronzelike luster — in some stones

Ametrine 5x10-20mm Top Drill Teeth - 15-16 Inch 8x10-10x12mm Turquoise is a naturally softAmetrine 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.