Rare large beads, minimum 17mm, maximum 20mm. They're cool (o^^o) They have inclusions! With a calm color scheme of black to brown, layered inclusions of gold to bronze can be seen, allowing you to enjoy the sparkling brilliance, the sense of weight, and the mineral-like appearance. Bead size: Approximately 17-20mm Inner diameter: Approximately 17cm ※ Black Gold Super Seven is a common trade name and color description for Foliated Mica in Quartz. #NaturalStone #BlackGoldSuperSeven