The oval cabochon of India, green aventurine, size 40mm x 30mm is polished and ready to set into a mounting or finding of your own choosing or design. The green aventurine cabochon has a terrific polish, lots of sparkle from the flakes of mica, and gorgeous green color. (G.O. cab) Please note: When ever you see a notation of a G.O. cab, this means it was made by Gary Olson, Powell, WY. He has been visually impaired (blind) since birth. His cabs are outstanding and we are proud to have him as a source for our web site.