This is Berber Agate; I'm told it's from Mexico. This particular piece has features that look like a flaming meteor streaking through space enroute to a cosmic disaster! Since I only have this small sample, I'm adding this cab to my collection.

55mm x 23mm x 8mm.   Weight: 91.05 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.