How much does a 0.20 to 0.49ct L SI1 natural round diamond cost?

As of November 6, 2026, 0.20 to 0.49ct L SI1 natural round diamonds typically cost $204 SGD to $834 SGD, with a median price of $388 SGD. There are currently 1,020 diamonds matching this specification available across retailers.

Where can I find the best price on a L SI1 round diamond?

About 56% of these diamonds are available at multiple retailers, with an average price spread of 70%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.20 to 0.49ct L SI1 Natural Round

Quick answer

As of November 6, 2026, there are 1,020 natural round diamonds with L colour and SI1 clarity in the 0.20 to 0.49ct range available across retailers worldwide. Prices typically run $204 SGD to $834 SGD, with a median of $388 SGD. Half of all listings fall between $794 SGD and $1,565 SGD per carat. The same specification in lab grown form lists at a median of about $450 SGD per carat. Over the last 30 days the median price moved -5.1% and the number of listings moved +14.4%.

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

1,020

Lowest Price

$87 SGD

Highest Price

$1,763 SGD

Average Price

$462 SGD

Market Intelligence

Cross Retailer %

55.8%

Price Spread

70.3%

30-Day Price Trend

-5.1%

30-Day Supply Change

+14.4%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$859/ct

10th Percentile

$479

Median

$859

90th Percentile

$1,676

Score Distribution

1.0K diamonds scored across 4 quality tiers

Excellent

222 (21.8%)

Very Good

347 (34.0%)

Good

286 (28.0%)

Average

165 (16.2%)

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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