JEWELRY ENGAGEMENT RING STL FILE FOR DOWNLOAD AND PRINT- CC11 Ring size US 6.5 . Gold 18k estimate weight 5.5 gram. Center diamond 6.5 mm ( 1.02 ct.) Small diamonds details. 2 , Diamond , Round , Diamond , 1.00 , .00ct. (total .01ct.) 2 , Diamond , Round , Diamond , 1.11 , .01ct. (total .01ct.) 2 , Diamond , Round , Diamond , 1.24 , .01ct. (total .01ct.) 2 , Diamond , Round , Diamond , 1.37 , .01ct. (total .02ct.)