How much does a 0.20 to 0.49ct D IF lab grown marquise diamond cost?

As of October 2026, 0.20 to 0.49ct D IF lab grown marquise diamonds typically cost $152 USD to $486 USD, with a median price of $300 USD. There are currently 146 diamonds matching this specification available across retailers.

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

About 46% of these diamonds are available at multiple retailers, with an average price spread of 63%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.20 to 0.49ct D IF Lab Grown Marquise

Quick answer

As of October 2026, there are 146 lab grown marquise diamonds with D color and IF clarity in the 0.20 to 0.49ct range available across retailers worldwide. Prices typically run $152 USD to $486 USD, with a median of $300 USD. At least 11 retailers stock this exact specification, and 46% of the stones appear at more than one of them, with an average price spread of 63%. Half of all listings fall between $532 USD and $1,142 USD per carat. The same specification in natural form lists at a median of about $2,179 USD per carat. Over the last 30 days the median price moved +6.1% and the number of listings moved +23.1%.

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 lab grown stones in the index: 485 USD per carat, -3.2% 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

146

Lowest Price

$92 USD

Highest Price

$1,483 USD

Average Price

$314 USD

Market Intelligence

Retailers Selling

Cross Retailer %

46.1%

Price Spread

63.3%

30-Day Price Trend

+6.1%

30-Day Supply Change

+23.1%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$963/ct

10th Percentile

$463

Median

$963

90th Percentile

$1,607

Score Distribution

520 diamonds scored across 5 quality tiers

Exceptional

1 (0.2%)

Excellent

165 (31.7%)

Very Good

42 (8.1%)

Good

280 (53.8%)

Average

32 (6.2%)

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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