All of our jewelry is guaranteed authentic by our Graduate Gemologist of the Gemological Institute of America (GIA). Vintage 14k White Gold Genuine Natural Diamond Ring w/Square Halo Design #J6453 14k white gold square halo .50ct tw diamond ring. The ring features a European cut diamond measuring about 4mm and weighing approximately .25cts. with fine VS-2 clarity and G-H color. There are also twenty-two small single cut accent diamonds measuring 1mm-1.5mm. The ring fits a size 5.5 finger, weighs 1.59 dwt., and dates from the 1930-40s. Absolutely beautiful! Please note: This item may be slightly under the karat stamp due to year of production or composition variances - such as sizing or modifications - as they may affect metal purity. Vintage pieces generally have a slightly lower karat percentage than the stamp. SKU#J6453. 100% Satisfaction Guaranteed!