Collection: Blue Chalcedony Agate

Agate is a type of translucent chalcedony, a subtype of microcrystalline quartz. It is known for multi-colored circular banding. The banding forms from silica rich minerals in groundwater filling open cavities within rock. This deposits crystals along the walls of cavity. The impurities within the minerals create the rings, cracks, and unique colors in the agate. Agate can have many different colors. 

As agate forms along walls of open cavities in rock, it commonly occurs on fossils. 

This collection focuses on blue chalcedony agate. The blue chalcedony forms rings with white 

Mohs Hardness Scale: 6.5 to 7.0

Blue Chalcedony Agate is a form of Agate that has translucent blue chalcedony as a major component of the solid banding patterns. Blue Lace Agate also has blue chalcedony, but it is organized in a "lace-like" layered pattern. 

Some other common types of Agate include: Lace Agate, Carnelian, Crazy Lace Agate, and Moss Agate, and Blue Chalcedony.