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

As of October 2026, 3.00 to 4.99ct I SI1 lab grown emerald diamonds typically cost HK$4,953 HKD to HK$39,106 HKD, with a median price of HK$16,927 HKD. There are currently 6 diamonds matching this specification available across retailers.

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

About 12% of these diamonds are available at multiple retailers, with an average price spread of 112%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct I SI1 Lab Grown Emerald

Quick answer

As of October 2026, there are 6 lab grown emerald diamonds with I colour and SI1 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run HK$4,953 HKD to HK$39,106 HKD, with a median of HK$16,927 HKD. At least 24 retailers stock this exact specification, and 12% of the stones appear at more than one of them, with an average price spread of 112%. Half of all listings fall between HK$2,770 HKD and HK$7,429 HKD per carat. The same specification in natural form lists at a median of about HK$97,152 HKD per carat. Over the last 30 days the median price moved +9.2% and the number of listings moved +10.3%.

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$4,410 HKD

Highest Price

HK$45,255 HKD

Average Price

HK$18,613 HKD

Market Intelligence

Retailers Selling

Cross Retailer %

11.9%

Price Spread

111.8%

30-Day Price Trend

+9.2%

30-Day Supply Change

+10.3%

Volatility (30d)

0.03

Price Range

Price per carat distribution across retailers

$531/ct

10th Percentile

$293

Median

$531

90th Percentile

$1,240

Score Distribution

13 diamonds scored across 4 quality tiers

Excellent

1 (7.7%)

Very Good

2 (15.4%)

Good

4 (30.8%)

Average

6 (46.2%)

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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