How much does a 1.00 to 1.49ct E SI1 lab grown emerald diamond cost?

As of October 2026, 1.00 to 1.49ct E SI1 lab grown emerald diamonds typically cost $266 NZD to $1,512 NZD, with a median price of $830 NZD. There are currently 308 diamonds matching this specification available across retailers.

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

About 30% of these diamonds are available at multiple retailers, with an average price spread of 87%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct E SI1 Lab Grown Emerald

Quick answer

As of October 2026, there are 308 lab grown emerald diamonds with E colour and SI1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $266 NZD to $1,512 NZD, with a median of $830 NZD. At least 38 retailers stock this exact specification, and 30% of the stones appear at more than one of them, with an average price spread of 87%. Half of all listings fall between $378 NZD and $1,032 NZD per carat. The same specification in natural form lists at a median of about $6,825 NZD per carat. Over the last 30 days the median price moved +3.0% and the number of listings moved +25.9%.

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

308

Lowest Price

$185 NZD

Highest Price

$4,258 NZD

Average Price

$862 NZD

Market Intelligence

Retailers Selling

Cross Retailer %

30.3%

Price Spread

86.7%

30-Day Price Trend

+3.0%

30-Day Supply Change

+25.9%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$425/ct

10th Percentile

$152

Median

$425

90th Percentile

$939

Score Distribution

843 diamonds scored across 4 quality tiers

Excellent

194 (23.0%)

Very Good

56 (6.6%)

Good

138 (16.4%)

Average

455 (54.0%)

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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