FACETWIREPrice Intelligence3 Carat Marquise natural diamonds
Every 3 carat marquise natural diamond Facet Wire tracks, sorted by live price.
Facet Wire is tracking 6 live 3 carat marquise natural listings right now across 2 retailers: Blue Nile (5), Frank Darling (1). Prices run from $25,385 to $188,215, with a median of $90,094 ($28,746 per carat at the median). Data refreshes nightly — last build 2026-10-18.
Most popular / better value
Across these 6 listings, the most common color is G (3 stones), the most common clarity is FL (2 stones).
Cheapest live 3 carat marquise natural listings
| Stone | Retailer | Carat | Color | Clarity | Cert | Price | $/ct |
|---|---|---|---|---|---|---|---|
| Natural Diamond [ID: MQ003076DI] | Frank Darling | 3.02 | K | VS2 | GIA 7553802721 | $25,385 | $8,406 |
| GIA 3.01 Carat G-SI1 Ideal Cut Marquise Natural Diamond | Blue Nile | 3.01 | G | SI1 | GIA | $46,778 | $15,541 |
| GIA 3.00 Carat G-VS1 Ideal Cut Marquise Natural Diamond | Blue Nile | 3.00 | G | VS1 | GIA | $62,278 | $20,759 |
| GIA 3.21 Carat D-FL Ideal Cut Marquise Natural Diamond | Blue Nile | 3.21 | D | FL | GIA | $117,909 | $36,732 |
| GIA 3.17 Carat D-FL Ideal Cut Marquise Natural Diamond | Blue Nile | 3.17 | D | FL | GIA | $120,284 | $37,944 |
| GIA 5.03 Carat G-IF Very Good Cut Marquise Natural Diamond | Blue Nile | 5.03 | G | IF | GIA | $188,215 | $37,418 |
Frequently asked questions
How much does a marquise natural diamond cost?
Across 6 live listings tracked by Facet Wire, marquise natural diamonds run from $25,385 to $188,215, with a median price of $90,094 ($28,746 per carat). The cheapest tracked right now is a 3.02 ct stone at Frank Darling for $25,385.
Which retailer is cheapest for marquise natural diamonds?
It changes nightly — that is the point of Facet Wire. The table on this page is sorted by live price across Blue Nile, Frank Darling, and the same certified stone often appears at several retailers with a real price gap.
Are marquise diamonds good value?
Marquise stones are priced off live market data here, not list prices. Compare the per-carat column: at the median, marquise natural diamonds run $28,746 per carat across our tracked retailers.
How often do these prices update?
Facet Wire re-scrapes its retailers nightly and rebuilds this page from the fresh data, so counts, medians and the cheapest listings reflect the latest run.