The facts
-Quartz that is formed not of one single crystal but finely grained microcrystals is known as chalcedony. The variety of chalcedony is even greater than transparent quartz varieties because it includes cryptocrystalline quartz with patterns as well as a wide range of solid colors. Agates are banded, bloodstone has red spots on a green ground, moss agate has a vegetal pattern. Jasper sometimes looks like a landscape painting. Another staple of the jewelry industry is black onyx, chalcedony quartz which owes its even black color to an ancient dyeing process that is still used today. Carnelian, another chalcedony valued in the ancient world, has a vivid brownish orange color and clear translucency that makes it popular for signet rings and seals. Chrysoprase, a bright apple green translucent chalcedony, is the most valued. It was a particular favorite of Frederick The Great of Prussia, who loved its bright green color. It can be seen today decorating many buildings in beautiful Prague, including the Chapel of St Wencelas. Chrysoprase is found today mostly in Australia. Unlike most other green stones, which owe their color to chromium or vanadium, chrysoprase derives its color from nickel. Its bright even color and texture lends itself well to beads, cabochons, and carvings.
Therapeutic Properties
-Breast milk,
