How much does a 2.00 to 2.99ct E SI1 lab grown cushion diamond cost?

As of September 2026, 2.00 to 2.99ct E SI1 lab grown cushion diamonds typically cost HK$3,410 HKD to HK$22,467 HKD, with a median price of HK$6,308 HKD. There are currently 444 diamonds matching this specification available across retailers.

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

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2.00 to 2.99ct E SI1 Lab Grown Cushion

Quick answer

As of September 2026, there are 444 lab grown cushion diamonds with E colour and SI1 clarity in the 2.00 to 2.99ct range available across retailers worldwide. Prices typically run HK$3,410 HKD to HK$22,467 HKD, with a median of HK$6,308 HKD. At least 28 retailers stock this exact specification. Half of all listings fall between HK$2,271 HKD and HK$6,650 HKD per carat. The same specification in natural form lists at a median of about HK$76,405 HKD per carat.

Three of the best scored stones at this specification right now:

Caratlytics Diamond Price Index, August 2026: natural diamonds at 2,184 USD per carat and lab-grown at 464 USD per carat, a natural to lab ratio of 4.7 to 1. Cushion lab grown stones in the index: 466 USD per carat, -14.7% month on month. See the full index release

Figures come from live listings across more than 100 retailers and refresh daily. The index is a monthly release.

Last updated: September 2026

Available

444

Lowest Price

HK$1,459 HKD

Highest Price

HK$197,109 HKD

Average Price

HK$10,185 HKD

Market Intelligence

Retailers Selling

Price Spread

146.1%

Price Range

Price per carat distribution across retailers

$382/ct

10th Percentile

$235

Median

$382

90th Percentile

$1,323

Score Distribution

444 diamonds scored across 4 quality tiers

Excellent

71 (16.0%)

Very Good

73 (16.4%)

Good

141 (31.8%)

Average

159 (35.8%)

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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