and the green color is caused by a reaction in the stone when the chrome is introduced to water
Black Tourmaline is a black crystalline aluminum borosilicate mineral with occasional light gray inclusions that appear as flecks or veins
Quartz has been highly valued by virtually every civilization throughout history
African Jade is a complex Calcium Aluminum Silicate and is a Nephrite Jade
depositing layer upon layer of Quartz silicate to create the banding and patterns now prized in Botswana Agate
Labradorite 10mm Round A Grade - 8-Inch Blue Lace Agate and the green color isLabradorite is remarkable for the way its aggregate layers refract light, creating iridescent flashes of blue, gold, pale green or copper red. This effect is known as labradorescence, taking its name from the stone. Labradorite is usually gray green, dark gray, light gray or black. It was discovered in Labrador, Canada in 1770 and named for the area, though it is referenced as a highly revered stone in much older Inuit tribal legends.