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

As of October 2026, 0.50 to 0.74ct G SI1 natural heart diamonds typically cost $557 SGD to $1,223 SGD, with a median price of $807 SGD. There are currently 650 diamonds matching this specification available across retailers.

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

About 34% of these diamonds are available at multiple retailers, with an average price spread of 35%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.50 to 0.74ct G SI1 Natural Heart

Quick answer

As of October 2026, there are 650 natural heart diamonds with G colour and SI1 clarity in the 0.50 to 0.74ct range available across retailers worldwide. Prices typically run $557 SGD to $1,223 SGD, with a median of $807 SGD. At least 59 retailers stock this exact specification, and 34% of the stones appear at more than one of them, with an average price spread of 35%. Half of all listings fall between $1,206 SGD and $1,711 SGD per carat. The same specification in lab grown form lists at a median of about $668 SGD per carat. Over the last 30 days the median price moved -1.7% and the number of listings moved +1.8%.

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. Heart natural stones in the index: 2,374 USD per carat, +9.8% 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

650

Lowest Price

$433 SGD

Highest Price

$2,652 SGD

Average Price

$874 SGD