Seam Agate

I think this a form of Seam Agate. I don't know how I did it, but I knocked a big chip off the back and actually cracked this cab (not badly, but sheesh...) while polishing the back. So I'm keeping it for the collection.

39mm x 30mm x 6mm.  Weight: 55.10 carats.

Click the image on the right to see the cabochon super-sized...

This cabochon is in my personal collection. It is not for sale.