How much does a 3.00 to 4.99ct I VS1 lab grown round diamond cost?

As of October 2026, 3.00 to 4.99ct I VS1 lab grown round diamonds typically cost $594 SGD to $2,230 SGD, with a median price of $1,190 SGD. There are currently 150 diamonds matching this specification available across retailers.

Where can I find the best price on a I VS1 round diamond?

About 26% of these diamonds are available at multiple retailers, with an average price spread of 81%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct I VS1 Lab Grown Round

Quick answer

As of October 2026, there are 150 lab grown round diamonds with I colour and VS1 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run $594 SGD to $2,230 SGD, with a median of $1,190 SGD. At least 42 retailers stock this exact specification, and 26% of the stones appear at more than one of them, with an average price spread of 81%. Half of all listings fall between $328 SGD and $738 SGD per carat. The same specification in natural form lists at a median of about $21,154 SGD per carat. Over the last 30 days the median price moved +4.3% and the number of listings moved -13.1%.

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 lab grown stones in the index: 414 USD per carat, -5.0% 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

150

Lowest Price

$452 SGD

Highest Price

$7,626 SGD

Average Price

$1,346 SGD

Market Intelligence

Retailers Selling

Cross Retailer %

25.9%

Price Spread

80.5%

30-Day Price Trend

+4.3%

30-Day Supply Change

-13.1%

Volatility (30d)

0.05

Price Range

Price per carat distribution across retailers

$397/ct

10th Percentile

$161

Median

$397

90th Percentile

$678

Score Distribution

344 diamonds scored across 4 quality tiers

Excellent

113 (32.8%)

Very Good

53 (15.4%)

Good

114 (33.1%)

Average

64 (18.6%)

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J VS1J colour is visually identical to I to the naked eye

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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