How much does a 3.00 to 4.99ct H I1 natural round diamond cost?

As of September 2026, 3.00 to 4.99ct H I1 natural round diamonds typically cost $13,949 SGD to $57,197 SGD, with a median price of $27,928 SGD. There are currently 131 diamonds matching this specification available across retailers.

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

About 46% of these diamonds are available at multiple retailers, with an average price spread of 76%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct H I1 Natural Round

Quick answer

As of September 2026, there are 131 natural round diamonds with H colour and I1 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run $13,949 SGD to $57,197 SGD, with a median of $27,928 SGD. At least 23 retailers stock this exact specification, and 46% of the stones appear at more than one of them, with an average price spread of 76%. Half of all listings fall between $5,953 SGD and $13,059 SGD per carat. The same specification in lab grown form lists at a median of about $6,733 SGD per carat. Over the last 30 days the median price moved -11.2% and the number of listings moved -12.4%.

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

Caratlytics Diamond Price Index, August 2026: natural diamonds at 2,184 USD per carat and lab-grown at 464 USD per carat, a natural to lab ratio of 4.7 to 1. Round natural stones in the index: 2,094 USD per carat, -3.8% month on month. See the full index release

Figures come from live listings across more than 100 retailers and refresh daily. The index is a monthly release.

Last updated: September 2026

Available

131

Lowest Price

$6,934 SGD

Highest Price

$104,678 SGD

Average Price

$33,227 SGD

Market Intelligence

Retailers Selling

Cross Retailer %

46.4%

Price Spread

75.7%

30-Day Price Trend

-11.2%

30-Day Supply Change

-12.4%

Volatility (30d)

0.03

Price Range

Price per carat distribution across retailers

$7,374/ct

10th Percentile

$2,863

Median

$7,374

90th Percentile

$12,280

Score Distribution

131 diamonds scored across 4 quality tiers

Excellent

11 (8.4%)

Very Good

49 (37.4%)

Good

24 (18.3%)

Average

47 (35.9%)

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Consider Instead

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

Lab-Grown H I1Same specifications, lab-grown origin

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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