How much does a 1.00 to 1.49ct D SI1 lab grown asscher diamond cost?

As of October 2026, 1.00 to 1.49ct D SI1 lab grown asscher diamonds typically cost $154 USD to $615 USD, with a median price of $346 USD. There are currently 80 diamonds matching this specification available across retailers.

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

About 37% of these diamonds are available at multiple retailers, with an average price spread of 74%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct D SI1 Lab Grown Asscher

Quick answer

As of October 2026, there are 80 lab grown asscher diamonds with D color and SI1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $154 USD to $615 USD, with a median of $346 USD. At least 28 retailers stock this exact specification, and 37% of the stones appear at more than one of them, with an average price spread of 74%. Half of all listings fall between $276 USD and $586 USD per carat. The same specification in natural form lists at a median of about $3,902 USD per carat. Over the last 30 days the median price moved -0.9% and the number of listings moved +17.3%.

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

$129 USD

Highest Price

$1,730 USD

Average Price

$370 USD

Market Intelligence

Retailers Selling

Cross Retailer %

37.3%

Price Spread

74.3%

30-Day Price Trend

-0.9%

30-Day Supply Change

+17.3%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$417/ct

10th Percentile

$175

Median

$417

90th Percentile

$848

Score Distribution

148 diamonds scored across 4 quality tiers

Excellent

49 (33.1%)

Very Good

17 (11.5%)

Good

57 (38.5%)

Average

25 (16.9%)

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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