How much does a 1.00 to 1.49ct I IF natural marquise diamond cost?

As of November 2026, 1.00 to 1.49ct I IF natural marquise diamonds typically cost $3,924 SGD to $8,926 SGD, with a median price of $5,005 SGD. There are currently 45 diamonds matching this specification available across retailers.

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

About 38% of these diamonds are available at multiple retailers, with an average price spread of 39%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct I IF Natural Marquise

Quick answer

As of November 2026, there are 45 natural marquise diamonds with I colour and IF clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $3,924 SGD to $8,926 SGD, with a median of $5,005 SGD. At least 55 retailers stock this exact specification, and 38% of the stones appear at more than one of them, with an average price spread of 39%. Half of all listings fall between $4,915 SGD and $7,252 SGD per carat. Over the last 30 days the median price moved +2.9% and the number of listings moved +15.4%.

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. 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. The index is a monthly release.

Last updated: November 2026

Available

Lowest Price

$3,022 SGD

Highest Price

$14,814 SGD

Average Price

$5,846 SGD

Market Intelligence

Retailers Selling

Cross Retailer %

38.1%

Price Spread

39.0%

30-Day Price Trend

+2.9%

30-Day Supply Change

+15.4%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$4,695/ct

10th Percentile

$3,242

Median

$4,695

90th Percentile

$6,805

Score Distribution

114 diamonds scored across 4 quality tiers

Excellent

45 (39.5%)

Very Good

23 (20.2%)

Good

20 (17.5%)

Average

26 (22.8%)

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J IFJ colour is visually identical to I to the naked eye

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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