How much does a 3.00 to 4.99ct H SI1 natural oval diamond cost?

As of October 2026, 3.00 to 4.99ct H SI1 natural oval diamonds typically cost $41,873 SGD to $103,701 SGD, with a median price of $58,504 SGD. There are currently 145 diamonds matching this specification available across retailers.

Where can I find the best price on a H SI1 oval diamond?

About 32% of these diamonds are available at multiple retailers, with an average price spread of 29%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct H SI1 Natural Oval

Quick answer

As of October 2026, there are 145 natural oval diamonds with H colour and SI1 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run $41,873 SGD to $103,701 SGD, with a median of $58,504 SGD. At least 60 retailers stock this exact specification, and 32% of the stones appear at more than one of them, with an average price spread of 29%. Half of all listings fall between $13,543 SGD and $18,124 SGD per carat. The same specification in lab grown form lists at a median of about $633 SGD per carat. Over the last 30 days the median price moved +0.1% and the number of listings moved +4.2%.

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. Oval natural stones in the index: 2,655 USD per carat, +10.2% 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

145

Lowest Price

$23,905 SGD

Highest Price

$180,848 SGD

Average Price

$66,035 SGD

Market Intelligence

Retailers Selling

Cross Retailer %

31.6%

Price Spread

28.9%

30-Day Price Trend

+0.1%

30-Day Supply Change

+4.2%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$12,395/ct

10th Percentile

$8,874

Median

$12,395

90th Percentile

$16,094

Score Distribution

452 diamonds scored across 4 quality tiers

Excellent

13 (2.9%)

Very Good

92 (20.4%)

Good

73 (16.2%)

Average

274 (60.6%)

Find Your Diamond

Search 145 H SI1 oval diamonds and compare prices.

Search Diamonds

Consider Instead

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

H SI2SI2 inclusions are not visible without magnification

Save 25%

Lab-Grown H SI1Same specifications, lab-grown origin

Save 95%

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