Ring Berlin for printable/cnc -no holes 5-15.7mm 6-16.5mm 7-17.3mm 8-18.2mm 9-18.9mm 10-19.8mm 11-20.65mm 12-21.7mm -weight ( size 8) yellow gold 585(14k) 6.03 gr yellow gold 750(18k) 6.77 gr silver 4.59 gr white gold 585 6.38 gr white gold 750 6.91 gr -If you have questions or suggestions for improvement of this product please contact me in messages