I wondered if anyone would help me in identifying this stone. I have bought several of these on eBay for a low price. I know these have been heat-treated and color-enhanced, but the markings are interesting, and I make pretty wire-wrapped pendants out of them. They were labeled “fire-agate” when I bought them. It’s just so different than the pictures of fire agate I’ve seen out there, that it makes me wonder. The vendor is in China. When I inquired further, I got this response…
"Yes ,this stone is really different from real Fire Agate.
May be it shoud called as picture jade since its veining somekind like fire on it,so we named it as Fire agate. This item is made form natural stone,just the colour is heat-treated.
We get it from our supplier and they didn’t know where it’s from either
Sorry to disappoint you"
Each of the four specimens in the photo is approximately 38 x 29 x 6mm.