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

As of November 2026, 1.00 to 1.49ct J SI1 natural asscher diamonds typically cost €1,190 EUR to €3,288 EUR, with a median price of €1,925 EUR. There are currently 55 diamonds matching this specification available across retailers.

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

About 35% of these diamonds are available at multiple retailers, with an average price spread of 54%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct J SI1 Natural Asscher

Quick answer

As of November 2026, there are 55 natural asscher diamonds with J colour and SI1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run €1,190 EUR to €3,288 EUR, with a median of €1,925 EUR. At least 51 retailers stock this exact specification, and 35% of the stones appear at more than one of them, with an average price spread of 54%. Half of all listings fall between €1,267 EUR and €2,128 EUR per carat. Over the last 30 days the median price moved -0.9% and the number of listings moved +7.8%.

Three of the best scored stones at this specification right now:

Caratlytics Diamond Price Index, October 2026: natural diamonds at 2,202 USD per carat and lab-grown at 462 USD per carat, a natural to lab ratio of 4.8 to 1. Asscher natural stones in the index: 2,432 USD per carat, -3.0% 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: November 2026

Available

Lowest Price

€704 EUR

Highest Price

€4,804 EUR

Average Price

€2,147 EUR

Market Intelligence

Retailers Selling

Cross Retailer %

35.1%

Price Spread

54.0%

30-Day Price Trend

-0.9%

30-Day Supply Change

+7.8%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$1,782/ct

10th Percentile

$1,151

Median

$1,782

90th Percentile

$3,046

Score Distribution

204 diamonds scored across 4 quality tiers

Excellent

15 (7.4%)

Very Good

26 (12.7%)

Good

32 (15.7%)

Average

131 (64.2%)

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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