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

As of October 2026, 0.50 to 0.74ct J SI2 natural round diamonds typically cost $420 USD to $1,309 USD, with a median price of $727 USD. There are currently 1,723 diamonds matching this specification available across retailers.

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

About 36% of these diamonds are available at multiple retailers, with an average price spread of 61%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.50 to 0.74ct J SI2 Natural Round

Quick answer

As of October 2026, there are 1,723 natural round diamonds with J color and SI2 clarity in the 0.50 to 0.74ct range available across retailers worldwide. Prices typically run $420 USD to $1,309 USD, with a median of $727 USD. At least 57 retailers stock this exact specification, and 36% of the stones appear at more than one of them, with an average price spread of 61%. Half of all listings fall between $914 USD and $1,622 USD per carat. The same specification in lab grown form lists at a median of about $927 USD per carat. Over the last 30 days the median price moved -1.8% and the number of listings moved +2.6%.

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

1,723

Lowest Price

$203 USD

Highest Price

$3,756 USD

Average Price

$818 USD

Market Intelligence

Retailers Selling

Cross Retailer %

36.4%

Price Spread

60.8%

30-Day Price Trend

-1.8%

30-Day Supply Change

+2.6%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$1,165/ct

10th Percentile

$746

Median

$1,165

90th Percentile

$2,373

Score Distribution

3.5K diamonds scored across 4 quality tiers

Excellent

517 (14.6%)

Very Good

715 (20.2%)

Good

906 (25.6%)

Average

1,398 (39.5%)

Find Your Diamond

Search 1,723 J 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.

J I1I1 inclusions are not visible without magnification

Save 15%

Lab-Grown J SI2Same specifications, lab-grown origin

Save 20%

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