Specifications: Material: Resin+Stone Quantity:1pc Length: Approx. 19cm (Elastic) Size: 6mm, 8mm,10mm, 12mmBecause of its shape and color like a tiger's eye, so it is named tiger's eye stone.The main origin of Africa, South Africa's gems.Conversion: 1 inch=2.54 cm, 1 cm=0.393 inches Note: Please allow slight size error, due to manual measurement. Due to the different display and different light, the picture may not reflect the actual color of the item. Thanks for your understanding.