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

As of November 2026, 0.75 to 0.99ct I SI1 natural asscher diamonds typically cost $1,402 NZD to $3,712 NZD, with a median price of $2,205 NZD. There are currently 30 diamonds matching this specification available across retailers.

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

About 24% of these diamonds are available at multiple retailers, with an average price spread of 67%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.75 to 0.99ct I SI1 Natural Asscher

Quick answer

As of November 2026, there are 30 natural asscher diamonds with I colour and SI1 clarity in the 0.75 to 0.99ct range available across retailers worldwide. Prices typically run $1,402 NZD to $3,712 NZD, with a median of $2,205 NZD. At least 54 retailers stock this exact specification, and 24% of the stones appear at more than one of them, with an average price spread of 67%. Half of all listings fall between $1,975 NZD and $4,034 NZD per carat. Over the last 30 days the median price moved +1.6% and the number of listings moved +4.0%.

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: November 2026

Available

Lowest Price

$990 NZD

Highest Price

$9,095 NZD

Average Price

$2,488 NZD

Market Intelligence

Retailers Selling

Cross Retailer %

23.7%

Price Spread

67.2%

30-Day Price Trend

+1.6%

30-Day Supply Change

+4.0%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$1,727/ct

10th Percentile

$925

Median

$1,727

90th Percentile

$3,032

Score Distribution

104 diamonds scored across 4 quality tiers

Excellent

12 (11.5%)

Very Good

20 (19.2%)

Good

18 (17.3%)

Average

54 (51.9%)

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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