Black Obsidian Necklace, 925 Sterling Silver Jewellery, Charming Accessory, Beaded Necklace, Gifts, Gifts for Women, Basic Design

This Handmade natural gemstone necklace made with 4*4mm faceted black faceted Obsidian with 925 sterling silver accessory. Necklace Lenght is adjustable between 42 cm- 53 cm. Beads align on steel rope. All Accessories are 925 sterling silver. For closure of our high quality bracelet we used 925 sterling silver clip with adjustable silver chain. It is a perfect gift for you and all your loved one for all special days. All our designs prepared by hand according to the your given sizes with love. Properities of Gemstone that we used for this multicolor jewellery; -Obsidian; or lapis obsidianus, is essentially dark glass. A type of igneous rock, called extrusive igneous rock, obsidian is extruded from the Earth as lava which when rapidly cooled forms a natural glass. As a volcanic glass, obsidian is mineral-like, or mineraloid, but is not a true mineral. This is because glass is amorphous, not crystalline in structure. An amorphous solid is not highly ordered in internal structure, unlike a crystal. Obsidian is primarily made of silica, not unlike black tourmaline, but due to the fact that the obsidian forms quickly from the cooling lava, there is no time for a crystalline structure to form, resulting in the amorphous black glass called obsidian. Many variations of obsidian exist, and their appearance depends on the inclusion of impurities, such as iron which leads to dark brown or black obsidian. When the mineral cristobalite is encased in the obsidian, it results in a rock with mottled white patches in the dark obsidian as seen above in the example of snowflake obsidian. ☆ABOUT US☆ https://www.ballwool.com/shop/SevenArtJewelry?ref=listing-shop2-all-items-count#about ☆OUR POLICIES☆ https://www.ballwool.com/shop/sevenartjewelry#policies Thanks for your visit Seven Art Jewelry