The oval cabochon of India, green aventurine, size 30mm x 40mm 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 send an e-mail if the size of the cabochon you would prefer is not listed.