4mm Natural Stone Strand Rings Healing Crystal Ring for Women Men Natural Stone:Amethyst ,Clear Crystal ,Green Aventurine ,Tiger Eye,Red Agate ,Rose Quartz,Indian Agate,Black Onyx,Turquoise,Moonstone,Opal Ring Sizes: Inner Diameter : Approx 20mm / 0.78 inches Ring Inner Perimeter : Approx 61mm / 2.4 inches Strand Ring , Elastic Stone Size: Approx 4 mm / 0.16 inches Note: 1.Material from natural stone , color of stones may different for each ring . 2.Pictures and size just for reference, The ring is elastic . Please check it before ordering . Handmade product , the size of each ring has deviation . 3. Due to the display effect of the display , the shooting environment and other factors , the product may have slight color difference , hope that you can understand .