Peanut Obsidian RingsEach ring features genuine peanut obsidian from Sonora, Mexico a rare spherulitic perlite with distinctive cream and brown orbicular patterns reminiscent of peanuts. Set in 925 sterling silver, these volcanic stone rings showcase nature's intricate artistry. The unique banding and natural variations make each piece one of a kind. Perfect for collectors of rare minerals and those drawn to earthy, distinctive jewellery with geological character. US