How much does a 1.50 to 1.99ct K IF natural round diamond cost?

As of November 6, 2026, 1.50 to 1.99ct K IF natural round diamonds typically cost $4,231 USD to $11,073 USD, with a median price of $6,469 USD. There are currently 346 diamonds matching this specification available across retailers.

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

About 42% of these diamonds are available at multiple retailers, with an average price spread of 53%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct K IF Natural Round

Quick answer

As of November 6, 2026, there are 346 natural round diamonds with K color and IF clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run $4,231 USD to $11,073 USD, with a median of $6,469 USD. Half of all listings fall between $3,238 USD and $5,436 USD per carat. Over the last 30 days the median price moved -0.1% and the number of listings moved +15.9%.

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. Round natural stones in the index: 2,124 USD per carat, -6.9% month on month. See the full index release

Figures come from current listings across more than 125 retailers. The index is a monthly release.

Last updated: November 6, 2026

Available

346

Lowest Price

$3,174 USD

Highest Price

$20,012 USD

Average Price

$7,253 USD

Market Intelligence

Cross Retailer %

42.5%

Price Spread

52.9%

30-Day Price Trend

-0.1%

30-Day Supply Change

+15.9%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$4,158/ct

10th Percentile

$2,682

Median

$4,158

90th Percentile

$6,821

Score Distribution

346 diamonds scored across 4 quality tiers

Excellent

117 (33.8%)

Very Good

83 (24.0%)

Good

33 (9.5%)

Average

113 (32.7%)

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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