Our mini Biography photo locket gets a gemstone upgrade with beautiful snowflake Obsidian. Featuring spectrum of black gemstones, this is a unique twist on an AC classic. 18k Gold Plated, Recycled Sterling Silver Locket fits two 8mm photos Free engraving, up to 3 characters Gemstone: 3mm Snowflake Obsidian, Created White Sapphire Locket is 11mm diameter Adjustable Chain Length: 18" with 2" extender, lobster clasp