Yin Yang Love Couple Positive Energy Amulet Bracelets White Quartz Black Agate Best Amulets Collection. Yin Yang Love Couple or Best Friends Balance Powers Positive Energy Amulet Bracelets White Quartz and Black Agate GemstonesYin Yang Love Couple Positive Energy Amulet Bracelets White Quartz Black Agate Each Yin Yang symbol is made from Black Obsidian and White Quartz Gemstones. Gemstone Beads size is 10mm. One is made with Natural Black Agate and the Other one is made with White Quartz Gemstone Beads. Bracelet Size: Comes with Adjustable satin cord. Each Bracelet will fit wrists up to 7.5 inches. Each Comes with Branded Packaging and Information Card representing Metaphysical Properties of Gemstone