Natural Mixed Gemstone Chip Bead Stretch Bracelets, Size: about 2.28 inch(58mm) inner diameter, gemstone beads: 0.24~13.5x0.08~6x0.08~6 inch(6~13.5x2~6x2~6mm).âPlease Note: These beads may include Natural Green Aventurine, Aquamarine, Quartz Crystal, Amethyst, Rose Quartz, Black Obsidian and so on(as the picture shows). but as it is a mixed product, the stone type is delivered randomly, please refer to the actual product delivered.