Green Onyx Tumbled Stones, Polished Green Onyx Gemstone, Green Onyx Healing Crystals, 1/2 LB Lot, Grade A Quality Size: 0.75" - 1.25" approx. You're expecting 12-15 stones per 1/2 lb on average. As the item size varies so the amount per 1/2 lb will vary from batch to batch. But it will be +/-. This is a guide only and orders may fall outside this guide as we sell this item by weight Stones used in reiki, healing, meditation and crystal healing. Great for therapy, grid work, and to carry in your pocket or pouch Shapes, sizes, colors, and patterns of Green Onyx tumbled stone may vary as it is a natural stone. Green Onyx contains layers of opaque moganite that give it a unique, opaque and banded appearance. Also called the world's most popular green gem, the Emerald is a precious gemstone. Whereas, Green Onyx is a well-known variety of semi-precious gemstones that are found in this day and age.