How much does a 0.75 to 0.99ct D IF natural marquise diamond cost?

As of October 2026, 0.75 to 0.99ct D IF natural marquise diamonds typically cost $3,865 AUD to $9,188 AUD, with a median price of $6,310 AUD. There are currently 30 diamonds matching this specification available across retailers.

Where can I find the best price on a D IF marquise diamond?

About 25% of these diamonds are available at multiple retailers, with an average price spread of 43%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.75 to 0.99ct D IF Natural Marquise

Quick answer

As of October 2026, there are 30 natural marquise diamonds with D colour and IF clarity in the 0.75 to 0.99ct range available across retailers worldwide. Prices typically run $3,865 AUD to $9,188 AUD, with a median of $6,310 AUD. At least 47 retailers stock this exact specification, and 25% of the stones appear at more than one of them, with an average price spread of 43%. Half of all listings fall between $6,112 AUD and $9,212 AUD per carat. The same specification in lab grown form lists at a median of about $1,029 AUD per carat. Over the last 30 days the median price moved +0.1% and the number of listings moved +4.5%.

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. Marquise natural stones in the index: 2,268 USD per carat, +10.8% 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

$3,411 AUD

Highest Price

$15,428 AUD

Average Price

$6,673 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

25.4%

Price Spread

42.7%

30-Day Price Trend

+0.1%

30-Day Supply Change

+4.5%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$5,098/ct

10th Percentile

$3,531

Median

$5,098

90th Percentile

$8,291

Score Distribution

78 diamonds scored across 5 quality tiers

Exceptional

2 (2.6%)

Excellent

16 (20.5%)

Very Good

18 (23.1%)

Good

21 (26.9%)

Average

21 (26.9%)

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Lab-Grown D IFSame 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