How much does a 1.50 to 1.99ct D IF natural radiant diamond cost?

As of October 2026, 1.50 to 1.99ct D IF natural radiant diamonds typically cost $18,052 AUD to $36,820 AUD, with a median price of $27,020 AUD. There are currently 3 diamonds matching this specification available across retailers.

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

About 24% of these diamonds are available at multiple retailers, with an average price spread of 33%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct D IF Natural Radiant

Quick answer

As of October 2026, there are 3 natural radiant diamonds with D colour and IF clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run $18,052 AUD to $36,820 AUD, with a median of $27,020 AUD. At least 26 retailers stock this exact specification, and 24% of the stones appear at more than one of them, with an average price spread of 33%. Half of all listings fall between $12,421 AUD and $17,315 AUD per carat. The same specification in lab grown form lists at a median of about $861 AUD per carat. Over the last 30 days the median price moved +2.1% and the number of listings moved -21.0%.

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. Radiant natural stones in the index: 3,091 USD per carat, +13.2% 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

$17,029 AUD

Highest Price

$38,696 AUD

Average Price

$27,540 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

24.1%

Price Spread

32.5%

30-Day Price Trend

+2.1%

30-Day Supply Change

-21.0%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$10,561/ct

10th Percentile

$7,966

Median

$10,561

90th Percentile

$14,775

Score Distribution

13 diamonds scored across 4 quality tiers

Excellent

2 (15.4%)

Very Good

2 (15.4%)

Good

3 (23.1%)

Average

6 (46.2%)

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Consider Instead

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

D VVS1VVS1 inclusions are not visible without magnification

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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