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

As of September 2026, 3.00 to 4.99ct I SI2 lab grown emerald diamonds typically cost $513 AUD to $11,478 AUD, with a median price of $4,141 AUD. There are currently 11 diamonds matching this specification available across retailers.

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

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3.00 to 4.99ct I SI2 Lab Grown Emerald

Quick answer

As of September 2026, there are 11 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 $513 AUD to $11,478 AUD, with a median of $4,141 AUD. At least 13 retailers stock this exact specification. Half of all listings fall between $350 AUD and $2,976 AUD per carat. The same specification in natural form lists at a median of about $17,089 AUD 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. Emerald lab grown stones in the index: 494 USD per carat, -6.7% 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

Lowest Price

$413 AUD

Highest Price

$11,596 AUD

Average Price

$5,706 AUD

Market Intelligence

Retailers Selling

Price Spread

380.6%

Price Range

Price per carat distribution across retailers

$495/ct

10th Percentile

$193

Median

$495

90th Percentile

$2,244

Score Distribution

11 diamonds scored across 4 quality tiers

Excellent

1 (9.1%)

Very Good

1 (9.1%)

Good

3 (27.3%)

Average

6 (54.5%)

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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