6.1mm Round Solitaire Engagement Ring Mounting 3d printable model 0257gems: 6.1mm-1 round cutfinger sizes: 6 , 6.75 , 7.5 , 8.5 US sizes average weight: 4.8 gr 14K for 7.5US sizefile format : STL(4 rings) and 3dm(original ring in size 6.75)Printable 3dmodel of Engagement solitaire ring