Dual-color authentic Obsidian sterling silver bracelet

well crafted authentic obsidian sterling silver bracelet with extension with 5 obsidian gemstones. the gemstones have dual color. they shine with a golden hue in sunlight and are otherwise dark in color. purchased in Tulum, Mexico in a government-approved jewelry store. obsidian gemstones are known to ward off negativity and offer protection for wearers. they were used in place of gold in Mayan temples. slightly worn. purchased in February 2024.