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

As of November 6, 2026, 0.50 to 0.74ct L SI2 natural round diamonds typically cost $319 USD to $1,008 USD, with a median price of $577 USD. There are currently 739 diamonds matching this specification available across retailers.

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

About 52% of these diamonds are available at multiple retailers, with an average price spread of 64%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.50 to 0.74ct L SI2 Natural Round

Quick answer

As of November 6, 2026, there are 739 natural round diamonds with L color and SI2 clarity in the 0.50 to 0.74ct range available across retailers worldwide. Prices typically run $319 USD to $1,008 USD, with a median of $577 USD. Half of all listings fall between $708 USD and $1,317 USD per carat. The same specification in lab grown form lists at a median of about $403 USD per carat. Over the last 30 days the median price moved -1.0% and the number of listings moved +5.2%.

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

Caratlytics Diamond Price Index, October 2026: natural diamonds at 2,202 USD per carat and lab-grown at 462 USD per carat, a natural to lab ratio of 4.8 to 1. Round natural stones in the index: 2,124 USD per carat, -6.9% month on month. See the full index release

Figures come from current listings across more than 125 retailers. The index is a monthly release.

Last updated: November 6, 2026

Available

739

Lowest Price

$150 USD

Highest Price

$2,016 USD

Average Price

$621 USD

Market Intelligence

Cross Retailer %

52.1%

Price Spread

64.2%

30-Day Price Trend

-1.0%

30-Day Supply Change

+5.2%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$949/ct

10th Percentile

$551

Median

$949

90th Percentile

$1,529

Score Distribution

739 diamonds scored across 4 quality tiers

Excellent

113 (15.3%)

Very Good

195 (26.4%)

Good

196 (26.5%)

Average

235 (31.8%)

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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