How much does a 0.20 to 0.49ct D I1 natural round diamond cost?

As of October 2026, 0.20 to 0.49ct D I1 natural round diamonds typically cost $226 USD to $829 USD, with a median price of $460 USD. There are currently 471 diamonds matching this specification available across retailers.

Where can I find the best price on a D I1 round diamond?

About 46% of these diamonds are available at multiple retailers, with an average price spread of 85%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.20 to 0.49ct D I1 Natural Round

Quick answer

As of October 2026, there are 471 natural round diamonds with D color and I1 clarity in the 0.20 to 0.49ct range available across retailers worldwide. Prices typically run $226 USD to $829 USD, with a median of $460 USD. At least 20 retailers stock this exact specification, and 46% of the stones appear at more than one of them, with an average price spread of 85%. Half of all listings fall between $933 USD and $2,039 USD per carat. The same specification in lab grown form lists at a median of about $567 USD per carat. Over the last 30 days the median price moved -8.1% and the number of listings moved +17.0%.

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

471

Lowest Price

$72 USD

Highest Price

$1,926 USD

Average Price

$501 USD

Market Intelligence

Retailers Selling

Cross Retailer %

46.4%

Price Spread

85.1%

30-Day Price Trend

-8.1%

30-Day Supply Change

+17.0%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$1,300/ct

10th Percentile

$619

Median

$1,300

90th Percentile

$3,985

Score Distribution

998 diamonds scored across 4 quality tiers

Excellent

218 (21.8%)

Very Good

190 (19.0%)

Good

208 (20.8%)

Average

382 (38.3%)

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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