Pietersite is tiger’s eye gone tempestuous: brecciated crocidolite in quartz whose golden, blue and rust fibers swirl in storm patterns rather than straight bands — collectors call it the “tempest stone”. Namibia and China’s Hunan province are the only notable sources.Each pietersite at GEMIC Institute is natural, certified by our Siem Reap laboratory and filmed so its chatoyant storm shows true. Unique cabochons; worldwide tracked shipping, 30-day returns.