・Size: 10mm, sold in packs of 5. Looks great as a bracelet with just one type of stone. ・Obsidian is a type of volcanic rock formed when lava cools rapidly, and its Japanese name is "Kokuyoseki" (black obsidian). ・Silver sheen (luster) can be seen due to the reflection of light by included air bubbles and fine particles. Silver obsidian has a gentle glow like moonlight on the surface of water at night. ・As a power stone, obsidian is mainly expected to provide protection in business and other endeavors. ・Our staff inspects and disinfects the items. Please purchase with confidence. ・Natural stones are carefully shipped in an organza drawstring bag. Obsidian is a type of volcanic rock formed when lava cools rapidly, and its Japanese name is "Kokuyoseki" (black obsidian). Sheen (luster) can sometimes be seen due to the reflection of light by included air bubbles and fine particles, and those with silver sheen are called "silver obsidian." There are various types of stones in the obsidian family, but silver obsidian is a very rare stone that has become known in recent years. ※We are very sorry, but we do not offer discounts or changes in quantity for sales. (We will offer a small discount for multiple purchases ← Combination of all products on sale in the shop is OK ^_^) Please understand. ※If you wish to receive a multiple purchase discount, please send us a message before purchasing, and we will calculate it for you. Silver Obsidian, Obsidian, Kokuyoseki (Black Obsidian), Onyx, Large Size, Natural Stone, 10mm, 10 millimeters, Power Stone, Round, Round Beads, Natural Stone, Beads, Bracelet, Sold Individually, Two Holes