A beautiful engagement ring that features a natural ( 3.81-carat ) oval-cut blue sapphire set in prongs. The center stone is surrounded by a halo of single-cut diamonds set in prongs. As well as a second halo of bezel set pear shape diamonds creating a floral motif. the total weight of the diamonds is ( 2.98 ) carats. The size of the blue sapphire is ( 11.37x9.95mm ). And the size of the round brilliant cut diamonds is ( 1.40x1.40mm )( 28 pcs ), and the size of pear cut diamonds is ( 4.50x3.00mm )( 18 pcs ).Metal weight: 14k 7.420 grams, 18k 8.880 grams, 22k 10.310 grams.File formate: 3DM and STL. The files are checked for errors by Magics software and all the objects are passed and ready for 3D printing. This ring can be resized to any finger size at no extra cost. If you have any questions regarding the CAPULET Sapphire Engagement Ring please feel free to contact me. THANK YOU.