Empire Obsidian - Silver Stud EarringsThe elegant Empire Stud Earrings feature a handmade glass jewel in a contemporary minimal setting for a beautifully modern statement. Obsidian is formed from molten lava that has cooled very quickly, it is often called 'volcanic glass' with the elements of fire, water and earth at its core. 15mm x 13mm x 11mm with subtle variations by nature of handmade process. 13mm post with 2mm secure butterfly backing. Italian glass and 925 Sterling Silver.