How much does a 3.00 to 4.99ct G IF natural marquise diamond cost?

As of November 2026, 3.00 to 4.99ct G IF natural marquise diamonds typically cost $82,826 AUD to $121,413 AUD, with a median price of $96,356 AUD. There are currently 1 diamonds matching this specification available across retailers.

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

About 31% of these diamonds are available at multiple retailers, with an average price spread of 17%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct G IF Natural Marquise

Quick answer

As of November 2026, there are 1 natural marquise diamonds with G colour and IF clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run $82,826 AUD to $121,413 AUD, with a median of $96,356 AUD. At least 27 retailers stock this exact specification, and 31% of the stones appear at more than one of them, with an average price spread of 17%. Half of all listings fall between $27,890 AUD and $33,104 AUD per carat. The same specification in lab grown form lists at a median of about $1,632 AUD per carat. Over the last 30 days the median price moved +2.3% and the number of listings moved +33.3%.

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

3.04ct Marquise G IF, GIA, grade A, from $82,598 AUD

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. Marquise natural stones in the index: 2,177 USD per carat, -4.2% 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: November 2026

Available

Lowest Price

$82,598 AUD

Highest Price

$152,712 AUD

Average Price

$99,920 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

30.8%

Price Spread

17.0%

30-Day Price Trend

+2.3%

30-Day Supply Change

+33.3%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$21,496/ct

10th Percentile

$18,060

Median

$21,496

90th Percentile

$26,093

Score Distribution

5 diamonds scored across 4 quality tiers

Excellent

1 (20.0%)

Very Good

1 (20.0%)

Good

1 (20.0%)

Average

2 (40.0%)

Find Your Diamond

Search 1 G IF marquise diamonds and compare prices.

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Consider Instead

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

H IFH colour is visually identical to G to the naked eye

Save 36%

Lab-Grown G IFSame specifications, lab-grown origin

Save 95%

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