How much does a 1.50 to 1.99ct E SI1 lab grown asscher diamond cost?

As of October 2026, 1.50 to 1.99ct E SI1 lab grown asscher diamonds typically cost $367 NZD to $2,074 NZD, with a median price of $1,073 NZD. There are currently 54 diamonds matching this specification available across retailers.

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

About 42% of these diamonds are available at multiple retailers, with an average price spread of 86%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct E SI1 Lab Grown Asscher

Quick answer

As of October 2026, there are 54 lab grown asscher diamonds with E colour and SI1 clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run $367 NZD to $2,074 NZD, with a median of $1,073 NZD. At least 35 retailers stock this exact specification, and 42% of the stones appear at more than one of them, with an average price spread of 86%. Half of all listings fall between $493 NZD and $1,118 NZD per carat. The same specification in natural form lists at a median of about $9,668 NZD per carat. Over the last 30 days the median price moved +0.9% and the number of listings moved +7.4%.

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. Asscher lab grown stones in the index: 470 USD per carat, -4.3% 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

$317 NZD

Highest Price

$5,199 NZD

Average Price

$1,121 NZD

Market Intelligence

Retailers Selling

Cross Retailer %

41.5%

Price Spread

85.8%

30-Day Price Trend

+0.9%

30-Day Supply Change

+7.4%

Volatility (30d)

0.03

Price Range

Price per carat distribution across retailers

$409/ct

10th Percentile

$175

Median

$409

90th Percentile

$831

Score Distribution

61 diamonds scored across 4 quality tiers

Excellent

15 (24.6%)

Very Good

23 (37.7%)

Good

17 (27.9%)

Average

6 (9.8%)

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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