How much does a 1.00 to 1.49ct E SI2 lab grown marquise diamond cost?

As of October 2026, 1.00 to 1.49ct E SI2 lab grown marquise diamonds typically cost $317 NZD to $1,243 NZD, with a median price of $813 NZD. There are currently 2 diamonds matching this specification available across retailers.

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

About 40% of these diamonds are available at multiple retailers, with an average price spread of 94%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct E SI2 Lab Grown Marquise

Quick answer

As of October 2026, there are 2 lab grown marquise diamonds with E colour and SI2 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $317 NZD to $1,243 NZD, with a median of $813 NZD. At least 19 retailers stock this exact specification, and 40% of the stones appear at more than one of them, with an average price spread of 94%. Half of all listings fall between $352 NZD and $873 NZD per carat. The same specification in natural form lists at a median of about $7,456 NZD per carat. Over the last 30 days the median price moved +8.5% and the number of listings moved +22.4%.

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. Marquise lab grown stones in the index: 485 USD per carat, -3.2% 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

$282 NZD

Highest Price

$2,517 NZD

Average Price

$755 NZD

Market Intelligence

Retailers Selling

Cross Retailer %

40.0%

Price Spread

94.0%

30-Day Price Trend

+8.5%

30-Day Supply Change

+22.4%

Volatility (30d)

0.04

Price Range

Price per carat distribution across retailers

$312/ct

10th Percentile

$153

Median

$312

90th Percentile

$627

Score Distribution

7 diamonds scored across 4 quality tiers

Excellent

1 (14.3%)

Very Good

1 (14.3%)

Good

1 (14.3%)

Average

4 (57.1%)

Find Your Diamond

Search 2 E SI2 marquise diamonds and compare prices.

Search Diamonds

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