220+ pieces 3dm files and STL Files only, There are solitaire ring, wedding ring, engagement ring and Promise Rings, #RINGS #EngagementRings.Most of these rings are designed in USA size 7. Most of the Rings center stone size are designed in 1Carat stone size. You will find these rings in .3dm Rhino nurbs format and STL files only, These STL files are uploaded separately and ready for 3D printing . Note: Stones in these products were removed so its easy for 3D printing directly. Please contact us if you have any further questions. Please check out the pictures for more information.