Natural Mixed Gemstone Cuboid & Lava Rock Round Beaded Stretch Bracelet, Size: about 2-1/4 inch(5.6cm) inner diameter, bead: 8.5mm.âPlease Note: These Gemstone May Include Natural Tiger Eye, Natural Sodalite, Natural Howlite 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.