Amazon.com: UNICRAFTALE 24pcs 6 Sizes Stainless Steel Blank Core Ring Settings 6 Sizes Finger Ring Blanks for Inlay Comfort Grooved Finger Ring Round Empty Ring for Jewelry Making
Hollow 12mm round top signet ring blanks 3D model 3D printable | CGTrader
Amazon.com: UNICRAFTALE 21pcs 7 Size Blank Ring Stainless Steel Finger Ring Grooved Core Inlay Ring for Resin Round Empty Ring Blanks for Jewelry Making
Tri-color Timascus ring blanks,4~13 size, Titanium ring, men's ring, w – Awesome Metals
925 Sterling Silver Rectangle Flat Wire Cuff Ring Blank for Jewelry Making 100mm | eBay