Star Natural & Synthetic Mixed Gemstone Bead Strands, Size: about 10mm in diameter, 2.8mm thick, hole: 1mm, about 45pcs/strand, 15.74 inch.âPlease Note: These beads may include Natural Green Aventurine, Moss Agate, Red Aventurine, Howlite, Dalmatian Jasper, Mahogany Obsidian, Rhodochrosite, Red Jasper 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.