How much does a 1.00 to 1.49ct E I1 lab grown oval diamond cost?

As of September 2026, 1.00 to 1.49ct E I1 lab grown oval diamonds typically cost $635 NZD to $8,510 NZD, with a median price of $3,489 NZD. There are currently 13 diamonds matching this specification available across retailers.

Where can I find the best price on a E I1 oval diamond?

About 12% of these diamonds are available at multiple retailers, with an average price spread of 228%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct E I1 Lab Grown Oval

Quick answer

As of September 2026, there are 13 lab grown oval diamonds with E colour and I1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $635 NZD to $8,510 NZD, with a median of $3,489 NZD. At least 7 retailers stock this exact specification, and 12% of the stones appear at more than one of them, with an average price spread of 228%. Half of all listings fall between $795 NZD and $7,086 NZD per carat. The same specification in natural form lists at a median of about $5,182 NZD per carat. Over the last 30 days the median price moved -1.7% and the number of listings moved -18.0%.

Three of the best scored stones at this specification right now:

Caratlytics Diamond Price Index, August 2026: natural diamonds at 2,184 USD per carat and lab-grown at 464 USD per carat, a natural to lab ratio of 4.7 to 1. Oval lab grown stones in the index: 487 USD per carat, -11.2% month on month. See the full index release

Figures come from live listings across more than 100 retailers and refresh daily. The index is a monthly release.

Last updated: September 2026

Available

Lowest Price

$340 NZD

Highest Price

$9,701 NZD

Average Price

$4,433 NZD

Market Intelligence

Retailers Selling

Cross Retailer %

11.8%

Price Spread

227.6%

30-Day Price Trend

-1.7%

30-Day Supply Change

-18.0%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$1,609/ct

10th Percentile

$338

Median

$1,609

90th Percentile

$4,994

Score Distribution

13 diamonds scored across 4 quality tiers

Excellent

2 (15.4%)

Very Good

2 (15.4%)

Good

3 (23.1%)

Average

6 (46.2%)

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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