This is 6 prongs solitaire ring that can be print out and cast with gold or silver and set with any round gemstone(diamond included).
There are 6 ring size stl files included: 49mm, 51mm, 53mm, 55mm, 57mm and 59mm (inner circumference). You can adjust the ring size 1-2mm bigger or smaller after you print and cast it into metal material.
The gemstone size can be 6.30mm to 6.80mm diameter. 1.00 carat diamond is about 6.50mm diamter.
This 3d ring made with rhinoceros 5 with tspline plug-in. The original .3dm file is included so you can adjust the ring to suit your style if needed.