How much does a 0.20 to 0.49ct I SI2 lab grown emerald diamond cost?

As of October 2026, 0.20 to 0.49ct I SI2 lab grown emerald diamonds typically cost $116 USD to $165 USD, with a median price of $141 USD. There are currently 2 diamonds matching this specification available across retailers.

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

About 100% of these diamonds are available at multiple retailers, with an average price spread of 94%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.20 to 0.49ct I SI2 Lab Grown Emerald

Quick answer

As of October 2026, there are 2 lab grown emerald diamonds with I color and SI2 clarity in the 0.20 to 0.49ct range available across retailers worldwide. Prices typically run $116 USD to $165 USD, with a median of $141 USD. At least 5 retailers stock this exact specification, and 100% of the stones appear at more than one of them, with an average price spread of 94%. Half of all listings fall between $434 USD and $898 USD per carat. The same specification in natural form lists at a median of about $892 USD per carat. Over the last 30 days the median price moved +1.6% and the number of listings moved +1.0%.

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

$110 USD

Highest Price

$681 USD

Average Price

$141 USD

Market Intelligence

Retailers Selling

Cross Retailer %

100.0%

Price Spread

94.1%

30-Day Price Trend

+1.6%

30-Day Supply Change

+1.0%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$493/ct

10th Percentile

$405

Median

$493

90th Percentile

$1,546

Score Distribution

2 diamonds scored across 1 quality tiers

Very Good

2 (100.0%)

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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