How much does a 0.75 to 0.99ct G SI1 lab grown emerald diamond cost?

As of October 2026, 0.75 to 0.99ct G SI1 lab grown emerald diamonds typically cost $280 NZD to $1,462 NZD, with a median price of $889 NZD. There are currently 56 diamonds matching this specification available across retailers.

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

About 28% of these diamonds are available at multiple retailers, with an average price spread of 101%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.75 to 0.99ct G SI1 Lab Grown Emerald

Quick answer

As of October 2026, there are 56 lab grown emerald diamonds with G colour and SI1 clarity in the 0.75 to 0.99ct range available across retailers worldwide. Prices typically run $280 NZD to $1,462 NZD, with a median of $889 NZD. At least 33 retailers stock this exact specification, and 28% of the stones appear at more than one of them, with an average price spread of 101%. Half of all listings fall between $463 NZD and $1,353 NZD per carat. The same specification in natural form lists at a median of about $3,241 NZD per carat. Over the last 30 days the median price moved +1.5% and the number of listings moved +3.9%.

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

$160 NZD

Highest Price

$3,388 NZD

Average Price

$885 NZD

Market Intelligence

Retailers Selling

Cross Retailer %

28.2%

Price Spread

101.2%

30-Day Price Trend

+1.5%

30-Day Supply Change

+3.9%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$494/ct

10th Percentile

$170

Median

$494

90th Percentile

$1,074

Score Distribution

92 diamonds scored across 4 quality tiers

Excellent

12 (13.0%)

Very Good

13 (14.1%)

Good

24 (26.1%)

Average

43 (46.7%)

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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