How much does a 3.00 to 4.99ct G SI1 lab grown cushion diamond cost?

As of July 2026, 3.00 to 4.99ct G SI1 lab grown cushion diamonds typically cost HK$4,308 HKD to HK$38,404 HKD, with a median price of HK$9,081 HKD. There are currently 146 diamonds matching this specification available across retailers.

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

Compare prices across retailers on Carat Hunter to see all your options.

3.00 to 4.99ct G SI1 Lab Grown Cushion

Last updated: July 2026

Available

146

Lowest Price

HK$2,262 HKD

Highest Price

HK$406,373 HKD

Average Price

HK$21,336 HKD

Market Intelligence

Retailers Selling

Cross Retailer %

N/A

Price Spread

190.5%

30-Day Price Trend

N/A

30-Day Supply Change

N/A

Volatility (30d)

N/A

Price Range

Price per carat distribution across retailers

$481/ct

10th Percentile

$213

Median

$481

90th Percentile

$1,502

Score Distribution

146 diamonds scored across 4 quality tiers

Excellent

20 (13.7%)

Very Good

59 (40.4%)

Good

41 (28.1%)

Average

26 (17.8%)

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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