These aren’t technically types of agate according to Mindat, but sometimes they will be described this way in rock shops or on rockhound websites. And these pictures are so great I couldn’t possibly pass them up. An agate with red, orange, or yellow plumes in just the right arangement can be called a flame agate, because it looks like fire.
Photo by Vítězslav Snášel from http://www.mindat.org/photo-114774.html
Frost agate describes the cracked finish on these beads (again, it’s not a mineralogical term). They can also be called cracked agate. The frost effect is heightened when they are blue. Whatever they are, I would totally wear earrings made with these beads.
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