How much does a 1.50 to 1.99ct H SI1 natural asscher diamond cost?

As of October 2026, 1.50 to 1.99ct H SI1 natural asscher diamonds typically cost £2,919 GBP to £7,811 GBP, with a median price of £4,918 GBP. There are currently 96 diamonds matching this specification available across retailers.

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

About 27% of these diamonds are available at multiple retailers, with an average price spread of 51%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct H SI1 Natural Asscher

Quick answer

As of October 2026, there are 96 natural asscher diamonds with H colour and SI1 clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run £2,919 GBP to £7,811 GBP, with a median of £4,918 GBP. At least 54 retailers stock this exact specification, and 27% of the stones appear at more than one of them, with an average price spread of 51%. Half of all listings fall between £2,239 GBP and £3,652 GBP per carat. The same specification in lab grown form lists at a median of about £676 GBP per carat. Over the last 30 days the median price moved -0.7% and the number of listings moved +12.5%.

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

£1,881 GBP

Highest Price

£12,108 GBP

Average Price

£5,344 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

27.3%

Price Spread

51.3%

30-Day Price Trend

-0.7%

30-Day Supply Change

+12.5%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$3,694/ct

10th Percentile

$2,507

Median

$3,694

90th Percentile

$6,102

Score Distribution

302 diamonds scored across 4 quality tiers

Excellent

35 (11.6%)

Very Good

44 (14.6%)

Good

53 (17.5%)

Average

170 (56.3%)

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Consider Instead

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

H SI2SI2 inclusions are not visible without magnification

Save 7%

Lab-Grown H SI1Same specifications, lab-grown origin

Save 75%

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