Chalcedony
Abstract
Description
SiO2 - Mohs Hardness: 6 - 7. Chalcedony is a very important ornamental stone. The varieties Agate, Chrysoprase, Carnelian, Sard, Tiger's Eye, Bloodstone, Jasper, and Moss Agate are all carved into cabochons and beads, making fine yet inexpensive gems. The apple-green variety, Chrysoprase, has a distinct color and commands a higher price than the other varieties. Light blue Chalcedony has also become popular as a gemstone.
item.page.type
natural object
StillImage
StillImage
item.page.format
image/jpeg
Keywords
environmental sciences