How much does a 0.50 to 0.74ct G SI1 natural cushion diamond cost?

As of October 2026, 0.50 to 0.74ct G SI1 natural cushion diamonds typically cost $410 USD to $1,858 USD, with a median price of $770 USD. There are currently 211 diamonds matching this specification available across retailers.

Where can I find the best price on a G SI1 cushion diamond?

About 28% of these diamonds are available at multiple retailers, with an average price spread of 85%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.50 to 0.74ct G SI1 Natural Cushion

Quick answer

As of October 2026, there are 211 natural cushion diamonds with G color and SI1 clarity in the 0.50 to 0.74ct range available across retailers worldwide. Prices typically run $410 USD to $1,858 USD, with a median of $770 USD. At least 54 retailers stock this exact specification, and 28% of the stones appear at more than one of them, with an average price spread of 85%. Half of all listings fall between $965 USD and $2,028 USD per carat. The same specification in lab grown form lists at a median of about $690 USD per carat. Over the last 30 days the median price moved -1.1% and the number of listings moved -0.8%.

Three of the best scored stones at this specification right now:

Caratlytics Diamond Price Index, September 2026: natural diamonds at 2,335 USD per carat and lab-grown at 443 USD per carat, a natural to lab ratio of 5.3 to 1. Cushion natural stones in the index: 2,948 USD per carat, +1.7% month on month. See the full index release

Figures come from current listings across more than 100 retailers and refresh daily. The index is a monthly release.

Last updated: October 2026

Available

211

Lowest Price

$276 USD

Highest Price

$3,537 USD

Average Price

$998 USD