How much does a 0.50 to 0.74ct D SI2 natural round diamond cost?

As of October 2026, 0.50 to 0.74ct D SI2 natural round diamonds typically cost $603 USD to $1,955 USD, with a median price of $1,054 USD. There are currently 4,687 diamonds matching this specification available across retailers.

Where can I find the best price on a D SI2 round diamond?

About 39% of these diamonds are available at multiple retailers, with an average price spread of 60%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.50 to 0.74ct D SI2 Natural Round

Quick answer

As of October 2026, there are 4,687 natural round diamonds with D color and SI2 clarity in the 0.50 to 0.74ct range available across retailers worldwide. Prices typically run $603 USD to $1,955 USD, with a median of $1,054 USD. At least 61 retailers stock this exact specification, and 39% of the stones appear at more than one of them, with an average price spread of 60%. Half of all listings fall between $1,305 USD and $2,277 USD per carat. The same specification in lab grown form lists at a median of about $679 USD per carat. Over the last 30 days the median price moved -3.3% and the number of listings moved +12.6%.

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. Round natural stones in the index: 2,248 USD per carat, +7.6% 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

4,687

Lowest Price

$314 USD

Highest Price

$4,000 USD

Average Price

$1,193 USD

Market Intelligence

Retailers Selling

Cross Retailer %

39.3%

Price Spread

59.9%

30-Day Price Trend

-3.3%

30-Day Supply Change

+12.6%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$1,624/ct

10th Percentile

$1,110

Median

$1,624

90th Percentile

$3,307

Score Distribution

7.6K diamonds scored across 4 quality tiers

Excellent

1,964 (25.9%)

Very Good

2,104 (27.8%)

Good

1,968 (26.0%)

Average

1,541 (20.3%)

Find Your Diamond

Search 4,687 D SI2 round diamonds and compare prices.

Search Diamonds

Consider Instead

Save money without compromising on what matters. These alternatives are visually similar but cost less.

D I1I1 inclusions are not visible without magnification

Save 17%

Lab-Grown D SI2Same specifications, lab-grown origin

Save 58%

Related Specifications

D IF D VVS1 D VVS2 D VS1 D VS2 D SI1 E IF E VVS1 E VVS2 E VS1 E VS2 E SI1 F IF F VVS1 F VVS2 F VS1 F VS2 F SI1 G IF G VVS1 G VVS2 G VS1 G VS2 G SI1 H IF H VVS1 H VVS2 H VS1 H VS2 H SI1 I IF I VVS1 I VVS2 I VS1 I VS2 I SI1