How much does a 3.00 to 4.99ct H SI2 lab grown oval diamond cost?

As of October 2026, 3.00 to 4.99ct H SI2 lab grown oval diamonds typically cost $633 AUD to $3,913 AUD, with a median price of $1,747 AUD. There are currently 6 diamonds matching this specification available across retailers.

Where can I find the best price on a H SI2 oval diamond?

About 56% of these diamonds are available at multiple retailers, with an average price spread of 88%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct H SI2 Lab Grown Oval

Quick answer

As of October 2026, there are 6 lab grown oval diamonds with H colour and SI2 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run $633 AUD to $3,913 AUD, with a median of $1,747 AUD. At least 20 retailers stock this exact specification, and 56% of the stones appear at more than one of them, with an average price spread of 88%. Half of all listings fall between $305 AUD and $779 AUD per carat. The same specification in natural form lists at a median of about $15,288 AUD per carat. Over the last 30 days the median price moved +6.2% and the number of listings moved +21.9%.

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 lab grown stones in the index: 453 USD per carat, -7.4% 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

Lowest Price

$460 AUD

Highest Price

$4,768 AUD

Average Price

$1,927 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

55.6%

Price Spread

88.1%

30-Day Price Trend

+6.2%

30-Day Supply Change

+21.9%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$378/ct

10th Percentile

$171

Median

$378

90th Percentile

$835

Score Distribution

13 diamonds scored across 4 quality tiers

Excellent

2 (15.4%)

Very Good

4 (30.8%)

Good

2 (15.4%)

Average

5 (38.5%)

Find Your Diamond

Search 6 H SI2 oval diamonds and compare prices.

Search Diamonds

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