Auctioned Rings A prime example is The Pink Star diamond ring, which fetched a breathtaking $71.2 million at auction, becoming the world's most expensive ring sold at auction. It weighed an impressive 59.60 carats, making it one of the largest Fancy Vivid Pink diamonds.

"Etsy is the perfect place for shoppers to find engagement rings that best illustrate their partner's aesthetic. From the style of gemstones to engravings and one-of-a-kind designs, buyers can work directly with a seller to bring their vision to life." The only problem? There are a lot of options to sift through.

Because of changes in how diamonds have been valued, older stones may have warmer color tones than modern gems. Similarly, the cut of an older stone will typically be less precise, and cuts like the mine, rose, old European, and table cut are much more common in vintage rings.

A diamond's value is determined by its famous 4Cs: carat weight, color, cut, clarity. A value of a diamond is determined by an appraiser using these four dimensions while the value of a diamond ring adds the additional element of the quality of the band.