Vintage 18 KT HGE Marked Cocktail Ring Smooth Band with Marquise Cut Garnet Red Stone. Suitable for a January or July Birthstone HGE = Heavy Gold Electroplated which means it has a thick 18 karat gold plating which is very durable Size 6 Smooth Band is about 2mm Wide Stone is about 5/8" or 16mm Long by 3/8" or 10mm Wide in the setting My mother worked for Uncas Manufacturing in Providence, RI for 3 decades, from the early 1950's until her retirement in the early 1980's. At the time, Uncas was the largest ring manufacturer in the United States and made both costume and precious metal rings. All of the Uncas rings I have listed were purchased directly from the factory and have had just one owner. None have been rolling around in estate sales or thrift stores. They have been stored properly in a climate controlled, smoke free environment. I will do my best to pinpoint the era of each ring, but some did span 2 or 3 decades due to the popularity of the style. This one is 1960s