Material: Natural Crystal Quartz Shape: Ring Stone Size(Approx): 7-8x29-35mm Rings Inner diameter Size (Approx): 16mm(Adjustable) Rings Outer diameter Size (Approx): 19-20mm Quantity : 1pcs,3pcs , 5pcs ,10pcs For Choice Natural Unakite/Aventurine/Obsidian/Turquoise/White Quartz/Lapis Lazuli Stick Rings, Simple Style Hexagon Pointed Quartz Adjustable Rings