How much does a 0.20 to 0.49ct E SI1 lab grown emerald diamond cost?

As of October 2026, 0.20 to 0.49ct E SI1 lab grown emerald diamonds typically cost HK$780 HKD to HK$2,860 HKD, with a median price of HK$1,475 HKD. There are currently 23 diamonds matching this specification available across retailers.

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

About 60% of these diamonds are available at multiple retailers, with an average price spread of 75%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.20 to 0.49ct E SI1 Lab Grown Emerald

Quick answer

As of October 2026, there are 23 lab grown emerald diamonds with E colour and SI1 clarity in the 0.20 to 0.49ct range available across retailers worldwide. Prices typically run HK$780 HKD to HK$2,860 HKD, with a median of HK$1,475 HKD. At least 6 retailers stock this exact specification, and 60% of the stones appear at more than one of them, with an average price spread of 75%. Half of all listings fall between HK$5,092 HKD and HK$10,797 HKD per carat. The same specification in natural form lists at a median of about HK$9,684 HKD per carat.

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. Emerald lab grown stones in the index: 451 USD per carat, -8.3% 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

HK$534 HKD

Highest Price

HK$6,417 HKD

Average Price

HK$1,738 HKD

Market Intelligence

Retailers Selling

Cross Retailer %

60.0%

Price Spread

74.8%

Price Range

Price per carat distribution across retailers

$972/ct

10th Percentile

$515

Median

$972

90th Percentile

$1,705

Score Distribution

43 diamonds scored across 4 quality tiers

Excellent

7 (16.3%)

Very Good

11 (25.6%)

Good

17 (39.5%)

Average

8 (18.6%)

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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