Ametrine 18x28mm Oval - 15-16 Inch 48hr_06252024 Unlike other forms of opal

Unlike other forms of opal

more commonly referred to as simply Australian Opal

and the green color is caused by a reaction in the stone when the chrome is introduced to water

Most topaz grows as crystals within the veins and voids of igneous rocks

grossular (varieties of which are hessonite or cinnamon-stone and tsavorite)

Ametrine 18x28mm Oval - 15-16 Inch 48hr_06252024 Unlike other forms of opalAmetrine 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.