Crystal April Birthstone 04

Compositions

Color: Colorless 

Hardness: 7 (Mohs) 

Specific Gravity: 2.65

Chemical Composition: SiO2

Refractive Index: 1.544 - 1.553 

Mineral Information: Macrocrystalline quartz

History

Quartz crystal was once believed to be an eternal ice sent by the heavenly gods. Until the late 1500s, many scholars thought this stone was fossilized ice. Quartz crystal is actually a mineral, one of the most abundant minerals in the Earth's continental crust, composed of silicon and oxygen.