How much does a 3.00 to 4.99ct I SI2 lab grown emerald diamond cost?

As of October 2026, 3.00 to 4.99ct I SI2 lab grown emerald diamonds typically cost €289 EUR to €2,983 EUR, with a median price of €450 EUR. There are currently 3 diamonds matching this specification available across retailers.

Where can I find the best price on a I SI2 emerald diamond?

About 33% of these diamonds are available at multiple retailers, with an average price spread of 153%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct I SI2 Lab Grown Emerald

Quick answer

As of October 2026, there are 3 lab grown emerald diamonds with I colour and SI2 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run €289 EUR to €2,983 EUR, with a median of €450 EUR. At least 18 retailers stock this exact specification, and 33% of the stones appear at more than one of them, with an average price spread of 153%. Half of all listings fall between €160 EUR and €554 EUR per carat. The same specification in natural form lists at a median of about €12,736 EUR per carat. Over the last 30 days the median price moved +7.5% and the number of listings moved +11.2%.

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

€270 EUR

Highest Price

€6,485 EUR

Average Price

€1,295 EUR

Market Intelligence

Retailers Selling

Cross Retailer %

33.3%

Price Spread

152.6%

30-Day Price Trend

+7.5%

30-Day Supply Change

+11.2%

Volatility (30d)

0.04

Price Range

Price per carat distribution across retailers

$288/ct

10th Percentile

$125

Median

$288

90th Percentile

$726

Score Distribution

8 diamonds scored across 4 quality tiers

Excellent

2 (25.0%)

Very Good

2 (25.0%)

Good

2 (25.0%)

Average

2 (25.0%)

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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