How much does a 0.75 to 0.99ct D SI1 natural asscher diamond cost?

As of October 2026, 0.75 to 0.99ct D SI1 natural asscher diamonds typically cost £826 GBP to £2,314 GBP, with a median price of £1,464 GBP. There are currently 25 diamonds matching this specification available across retailers.

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

About 21% of these diamonds are available at multiple retailers, with an average price spread of 62%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.75 to 0.99ct D SI1 Natural Asscher

Quick answer

As of October 2026, there are 25 natural asscher diamonds with D colour and SI1 clarity in the 0.75 to 0.99ct range available across retailers worldwide. Prices typically run £826 GBP to £2,314 GBP, with a median of £1,464 GBP. At least 54 retailers stock this exact specification, and 21% of the stones appear at more than one of them, with an average price spread of 62%. Half of all listings fall between £1,231 GBP and £2,286 GBP per carat. The same specification in lab grown form lists at a median of about £336 GBP per carat. Over the last 30 days the median price moved -0.9% and the number of listings moved +1.2%.

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

£528 GBP

Highest Price

£4,316 GBP

Average Price

£1,614 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

21.4%

Price Spread

62.4%

30-Day Price Trend

-0.9%

30-Day Supply Change

+1.2%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$2,252/ct

10th Percentile

$1,283

Median

$2,252

90th Percentile

$3,677

Score Distribution

115 diamonds scored across 4 quality tiers

Excellent

16 (13.9%)

Very Good

20 (17.4%)

Good

29 (25.2%)

Average

50 (43.5%)

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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

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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