How much does a 5.00ct+ G SI2 lab grown emerald diamond cost?

As of October 2026, 5.00ct+ G SI2 lab grown emerald diamonds typically cost $819 NZD to $6,919 NZD, with a median price of $2,147 NZD. There are currently 5 diamonds matching this specification available across retailers.

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

About 35% of these diamonds are available at multiple retailers, with an average price spread of 104%. A comparison tool like Carat Hunter lets you see all the prices side by side.

5.00ct+ G SI2 Lab Grown Emerald

Quick answer

As of October 2026, there are 5 lab grown emerald diamonds with G colour and SI2 clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run $819 NZD to $6,919 NZD, with a median of $2,147 NZD. At least 18 retailers stock this exact specification, and 35% of the stones appear at more than one of them, with an average price spread of 104%. Half of all listings fall between $266 NZD and $698 NZD per carat. Over the last 30 days the median price moved +8.0% and the number of listings moved +5.2%.

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

$723 NZD

Highest Price

$9,864 NZD

Average Price

$3,200 NZD

Market Intelligence

Retailers Selling

Cross Retailer %

34.8%

Price Spread

103.6%

30-Day Price Trend

+8.0%

30-Day Supply Change

+5.2%

Volatility (30d)

0.05

Price Range

Price per carat distribution across retailers

$234/ct

10th Percentile

$121

Median

$234

90th Percentile

$642

Score Distribution

7 diamonds scored across 4 quality tiers

Excellent

2 (28.6%)

Very Good

2 (28.6%)

Good

2 (28.6%)

Average

1 (14.3%)

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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