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

As of October 2026, 1.50 to 1.99ct G SI1 lab grown asscher diamonds typically cost $485 NZD to $2,796 NZD, with a median price of $1,244 NZD. There are currently 20 diamonds matching this specification available across retailers.

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

About 47% of these diamonds are available at multiple retailers, with an average price spread of 84%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct G SI1 Lab Grown Asscher

Quick answer

As of October 2026, there are 20 lab grown asscher diamonds with G colour and SI1 clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run $485 NZD to $2,796 NZD, with a median of $1,244 NZD. At least 32 retailers stock this exact specification, and 47% of the stones appear at more than one of them, with an average price spread of 84%. Half of all listings fall between $499 NZD and $1,155 NZD per carat. The same specification in natural form lists at a median of about $8,943 NZD per carat. Over the last 30 days the median price moved +3.7% and the number of listings moved -11.1%.

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

$351 NZD

Highest Price

$3,910 NZD

Average Price

$1,443 NZD

Market Intelligence

Retailers Selling

Cross Retailer %

46.8%

Price Spread

83.5%

30-Day Price Trend

+3.7%

30-Day Supply Change

-11.1%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$441/ct

10th Percentile

$205

Median

$441

90th Percentile

$1,075

Score Distribution

26 diamonds scored across 4 quality tiers

Excellent

7 (26.9%)

Very Good

6 (23.1%)

Good

10 (38.5%)

Average

3 (11.5%)

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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