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 €134 EUR to €445 EUR, with a median price of €253 EUR. There are currently 140 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 64%. 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 140 lab grown marquise diamonds with D colour and IF clarity in the 0.20 to 0.49ct range available across retailers worldwide. Prices typically run €134 EUR to €445 EUR, with a median of €253 EUR. 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 64%. Half of all listings fall between €477 EUR and €1,022 EUR per carat. The same specification in natural form lists at a median of about €1,948 EUR per carat. Over the last 30 days the median price moved +4.0% and the number of listings moved 0.0%.

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. 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

140

Lowest Price

€82 EUR

Highest Price

€1,328 EUR

Average Price

€274 EUR

Market Intelligence

Retailers Selling

Cross Retailer %

46.1%

Price Spread

64.4%

30-Day Price Trend

+4.0%

30-Day Supply Change

0.0%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$946/ct

10th Percentile

$463

Median

$946

90th Percentile

$1,607

Score Distribution

459 diamonds scored across 4 quality tiers

Excellent

148 (32.2%)

Very Good

33 (7.2%)

Good

247 (53.8%)

Average

31 (6.8%)

Find Your Diamond

Search 140 D IF marquise diamonds and compare prices.

Search Diamonds

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

Save 29%

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