Prepared for production (3d-printing or CNC-machining) set of 10 STL models and editable 3DM source file of T1 ring replicas.
Sizes present (Tiffany's US scale): 4, 4+1/2, 5, 5+1/2, 6, 6+1/2, 7, 7+1/2, 8 and 8+1/2.
Model volumes (and estimated weights) varies from 230 to 268mm^3 (estimated wegth for sterling silver is from less than 2.3g to less than 2.7g... for gold alloys it's 3-3.5g):
Each size was modeled as special part, I've not used fast resizing tools (stretch, flow etc.) due to numerous reasons linked with QUALITY of the model.