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

As of October 2026, 1.00 to 1.49ct D SI1 natural asscher diamonds typically cost £1,433 GBP to £5,165 GBP, with a median price of £3,069 GBP. There are currently 47 diamonds matching this specification available across retailers.

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

About 31% of these diamonds are available at multiple retailers, with an average price spread of 66%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct D SI1 Natural Asscher

Quick answer

As of October 2026, there are 47 natural asscher diamonds with D colour and SI1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run £1,433 GBP to £5,165 GBP, with a median of £3,069 GBP. At least 59 retailers stock this exact specification, and 31% of the stones appear at more than one of them, with an average price spread of 66%. Half of all listings fall between £1,731 GBP and £3,288 GBP per carat. The same specification in lab grown form lists at a median of about £284 GBP per carat. Over the last 30 days the median price moved +2.8% and the number of listings moved +3.6%.

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 natural stones in the index: 2,504 USD per carat, -3.3% 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

£740 GBP

Highest Price

£10,245 GBP

Average Price

£3,278 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

31.1%

Price Spread

66.5%

30-Day Price Trend

+2.8%

30-Day Supply Change

+3.6%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$3,137/ct

10th Percentile

$1,950

Median

$3,137

90th Percentile

$5,648

Score Distribution

142 diamonds scored across 4 quality tiers

Excellent

24 (16.9%)

Very Good

20 (14.1%)

Good

28 (19.7%)

Average

70 (49.3%)

Find Your Diamond

Search 47 D SI1 asscher diamonds and compare prices.

Search Diamonds

Consider Instead

Save money without compromising on what matters. These alternatives are visually similar but cost less.

Lab-Grown D SI1Same specifications, lab-grown origin

Save 87%

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