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

As of October 2026, 1.00 to 1.49ct I SI1 lab grown emerald diamonds typically cost €430 EUR to €976 EUR, with a median price of €448 EUR. There are currently 72 diamonds matching this specification available across retailers.

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

About 40% of these diamonds are available at multiple retailers, with an average price spread of 112%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct I SI1 Lab Grown Emerald

Quick answer

As of October 2026, there are 72 lab grown emerald diamonds with I color and SI1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run €430 EUR to €976 EUR, with a median of €448 EUR. At least 29 retailers stock this exact specification, and 40% of the stones appear at more than one of them, with an average price spread of 112%. Half of all listings fall between €553 EUR and €1,647 EUR per carat. The same specification in natural form lists at a median of about €2,331 EUR per carat. Over the last 30 days the median price moved -0.0% 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

€118 EUR

Highest Price

€4,718 EUR

Average Price

€687 EUR

Market Intelligence

Retailers Selling

Cross Retailer %

39.9%

Price Spread

112.4%

30-Day Price Trend

-0.0%

30-Day Supply Change

-1.0%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$1,088/ct

10th Percentile

$468

Median

$1,088

90th Percentile

$2,485

Score Distribution

81 diamonds scored across 4 quality tiers

Excellent

54 (66.7%)

Very Good

14 (17.3%)

Good

4 (4.9%)

Average

9 (11.1%)

Find Your Diamond

Search 72 I SI1 emerald diamonds and compare prices.

Search Diamonds

Consider Instead

Save money without compromising on what matters. These alternatives are visually similar but cost less.

J SI1J colour is visually identical to I to the naked eye

Save 4%

I SI2SI2 inclusions are not visible without magnification

Save 12%

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