Natural & Synthetic Mixed Gemstone Chips & Shell Beaded Stretch Bracelet, HeartSize: about 12mm wide, inner diameter: 1-3/4 inch(4.3cm).âPlease Note: These Gemstone May Include Natural Lapis Lazuli & Green Aventurine & Red Jasper & Amethyst & Red Aventurine & Citrine & Synthetic Turquoise.