Ametrine 10mm Round A Grade - 15-16 Inch Stone Type_Green Garnet It is considered a precious

It is considered a precious Opal

Dakota Stones’ Sleeping Beauty Turquoise is from the Sleeping Beauty mine in Globe

Aquamarine is a transparent to translucent stone ranging from cerulean blue to light blue in higher grades

who performed early research into the many optical properties of mica

It has a hardness of 8 on the Mohs hardness scale

Ametrine 10mm Round A Grade - 15-16 Inch Stone Type_Green Garnet It is considered a preciousAmetrine 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.