What is agate?
Agate is a common rock consisting of chalcedony which is a form of silica, which in turn is quartz, therefor agate is essentially quartz.
It comes in many types and colors, which differ around the world, with each being unique.
It is commonly used in Jewellery due to its hardness, chemical resistance and its ability to retain a highly polished surface.
It is 7 on the Mohs hardness scale.
Just some of the types of agate are: Lace agate. Blue lace agate. Crazy lace agate. Moss agate. Dendritic agate. Turritella agate. Lake Michigan cloud agate. Greek agate. Brazilian agate. Polyhedroid agate. Iris agate. Holley blue agate. Carnelian agate. Fire agate.
Depending on the type, it can range from inexpensive to thousands of dollars for a small stone.