14K Gold Sapphire & Diamond Ring Size 6 1/4 Vintage

This beautiful dark sapphire ring with four diamonds is stamped 14K and what I believe reads T&C. It is a size 6 1/4, approximately. It was purchased in the late 1980's or very early 1990's and has remained with the original owner ever since. It was seldom worn and in great condition. A jeweler recently examined it and placed a value of $750.00 if purchased new today. See all pictures for full description and condition. Questions welcome. From a smoke free home. T&C may reference Town & Country Jewelry Manufacturing Company.