How much does a 3.00 to 4.99ct I SI1 lab grown round diamond cost?

As of June 2026, 3.00 to 4.99ct I SI1 lab grown round diamonds are available from $152 SGD to $1,085,993 SGD, with an average price of $6,227 SGD. There are currently 4,065 diamonds matching this specification available across retailers.

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

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3.00 to 4.99ct I SI1 Lab Grown Round

Last updated: June 2026

Available

4,065

Lowest Price

$152 SGD

Highest Price

$1,085,993 SGD

Average Price

$6,227 SGD

Market Intelligence

Retailers Selling

Cross Retailer %

N/A

Price Spread

165.8%

30-Day Price Trend

N/A

30-Day Supply Change

N/A

Volatility (30d)

N/A

Price Range

Price per carat distribution across retailers

$7,025/ct

10th Percentile

$744

Median

$7,025

90th Percentile

$16,675

Score Distribution

4.1K diamonds scored across 4 quality tiers

Excellent

455 (11.2%)

Very Good

2,012 (49.5%)

Good

1,029 (25.3%)

Average

569 (14.0%)

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J SI1J 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