Black Mixed Gold Vermeil Bracelet (8mm)One stone was liquid fire. One cooled into glass. One grew deep in the earth under pressure. Product Highlights: The Stone: Three black stones, three different characters. The polished beads are black tourmaline, a crystalline mineral that grew slowly under heat and pressure deep underground. Its surface is glossy and smooth with a depth that catches light. The matte beads are obsidian, which is volcanic glass with its shine stripped back to a soft,