Natural Gemstone Stretch Bracelets, with Natural Lava Rock Beads, RoundSize: about 2 inch(52mm) inner diameter; beads: 8~15mm.âPlease Note: These Gemstone may include Natural Larvikite, Rose Quartz, Tiger Eye, Lapis Lazuli(Dyed), Amethyst, Lava Rock 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.