STAMPED 10 K which means 10 k solid gold INSIDE SHANK. The item "Vintage 1940-50s 10 k Solid Gold Lab Ruby WITH DIAMOND Men' Ring Sz. 9" is in sale since Monday, June 18, 2018.This item is in the category "Jewelry & Watches\Vintage & Antique Jewelry\Fine\Retro, Vintage 1930s-1980s\Rings". The seller is "cinderella9511" and is located in Sicklerville, New Jersey. This item can be shipped to United States, Canada.