The coloring of this pretty freeform cabochon suggests Mahogany Obsidian, but the patterns make this only a tentative identification. Nonetheless, it's a looker!

28mm x 13.5mm x 6mm.   Weight: 14.15 carats.

Every one of my cabochons is custom cut to take the best advantage of the particular slab from which it is fashioned. Colors may vary somewhat from what is pictured due to differences in computer monitors.

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

MOB012