Small Black Onyx Pyramid - Pyramid Shaped Black Onyx Stone - Black Onyx Stone Pyramid - Reiki - AM20B6-05 (1) Small Black Onyx Pyramid -- Pyramid Shaped Black Onyx Stone - Black Onyx Stone Pyramid - Reiki - AM20B6-05 The photos are taken in house of our stock and items will vary in shape and size. AVERAGE measure of stones is approximately 14-18mm. materials: chakra, pyramid, stone pyramids, chakra set, rose quartz Rock Paradise Exclusive COA Find more great pendants and stones in our shop. Search Rock Paradise on Amazon. We also have many bulk deals available!