Emerald is a variety of the mineral beryl (Be3Al2(SiO3)6) colored green by trace amounts of chromium and sometimes vanadium. Beryl has a hardness of 7.5–8 on the 10 point Mohs scale of mineral hardness. Most emeralds are highly included, so their toughness is classified as generally poor.
Published by mattfiske
My name is Matt and I'm a potter living in Southeast Alaska. I've been an artist/teacher/potter for the past decade, and I got my start in ceramics in high school some 18 years ago. These days I make my living selling wheel thrown pottery that sits at the intersection of ceramics/science/mineralogy/and geology. View all posts by mattfiske