Vintage engagement rings fall into a unique category of rings that feature one-of-a-kind designs and classic styling. For an engagement ring to be considered vintage, it typically must be between 50 and 100 years old. A piece that falls within this time frame will come with a distinctive setting, but it will also have a rare cut center stone. In addition to unique cuts, vintage & antique engagement rings often have center stones made from colored gems instead of white diamonds. This adds to the originality of the jewelry item.