How much does a 1.00 to 1.49ct D SI2 lab grown asscher diamond cost?

As of October 2026, 1.00 to 1.49ct D SI2 lab grown asscher diamonds typically cost £125 GBP to £464 GBP, with a median price of £220 GBP. There are currently 3 diamonds matching this specification available across retailers.

Where can I find the best price on a D SI2 asscher diamond?

About 38% of these diamonds are available at multiple retailers, with an average price spread of 90%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct D SI2 Lab Grown Asscher

Quick answer

As of October 2026, there are 3 lab grown asscher diamonds with D colour and SI2 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run £125 GBP to £464 GBP, with a median of £220 GBP. At least 17 retailers stock this exact specification, and 38% of the stones appear at more than one of them, with an average price spread of 90%. Half of all listings fall between £239 GBP and £507 GBP per carat. The same specification in natural form lists at a median of about £2,794 GBP per carat. Over the last 30 days the median price moved -0.3% and the number of listings moved +20.0%.

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. 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

£115 GBP

Highest Price

£753 GBP

Average Price

£273 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

38.5%

Price Spread

89.8%

30-Day Price Trend

-0.3%

30-Day Supply Change

+20.0%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$398/ct

10th Percentile

$227

Median

$398

90th Percentile

$850

Score Distribution

4 diamonds scored across 2 quality tiers

Excellent

2 (50.0%)

Good

2 (50.0%)

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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