This freeform cabochon is also known as Magneprase and has a unique combination of magnesite (white), green prase and chromium chalcedony. It comes from Kalgoorlie in the Eastern Goldfields of Western Australia. All of our cabochons are cut with a rounded dome, polished flat back, and back cut to accommodate bezel settings. Colors may vary somewhat from what is pictured due to differences in computer monitors.