Apache tears are rounded, obsidian, black, natural, glassy pebbles or nodules which have formed from old lava flows due to erosion. (Stock 567) When Apache tears are held to a light source or slabbed, they are translucent and a light smoky color. Size of the individual rough Arizona Apache tears are large from approximately 2″ to 3″ or there about. For tumbling tips for Apache tears see Tumbling with rotary or barrel tumblers. They will make very nice tumbled stones and also use for jewelry, or give to a budding geologist for a sample for an interesting addition to a collection. Apache tears are sold by one pound for one order. As you know the best tumbling process is to have an assortment of sizes. Remember when tumbling Apache tears, it is recommended to use only Apache tears. The reason being the stones are very round, and if you have other broken obsidian, or slabs, tumbling with them, the Apache tears will be ground much smaller by the time the rough and broken chunks of obsidian are shaped. If you want to get creative and tumble other rough obsidian until you are almost happy with their shape, then you can add some Apache tears and continue the process. Enjoy!