How much does a 1.00 to 1.49ct F SI1 lab grown oval diamond cost?

As of October 2026, 1.00 to 1.49ct F SI1 lab grown oval diamonds typically cost €293 EUR to €807 EUR, with a median price of €510 EUR. There are currently 70 diamonds matching this specification available across retailers.

Where can I find the best price on a F SI1 oval diamond?

About 18% of these diamonds are available at multiple retailers, with an average price spread of 59%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct F SI1 Lab Grown Oval

Quick answer

As of October 2026, there are 70 lab grown oval diamonds with F color and SI1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run €293 EUR to €807 EUR, with a median of €510 EUR. At least 29 retailers stock this exact specification, and 18% of the stones appear at more than one of them, with an average price spread of 59%. Half of all listings fall between €344 EUR and €632 EUR per carat. The same specification in natural form lists at a median of about €3,189 EUR per carat. Over the last 30 days the median price moved -2.0% and the number of listings moved +4.3%.

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. Oval lab grown stones in the index: 453 USD per carat, -7.4% 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

Lowest Price

€124 EUR

Highest Price

€1,279 EUR

Average Price

€535 EUR

Market Intelligence

Retailers Selling

Cross Retailer %

18.4%

Price Spread

58.6%

30-Day Price Trend

-2.0%

30-Day Supply Change

+4.3%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$549/ct

10th Percentile

$196

Median

$549

90th Percentile

$982

Score Distribution

185 diamonds scored across 4 quality tiers

Excellent

18 (9.7%)

Very Good

23 (12.4%)

Good

48 (25.9%)

Average

96 (51.9%)

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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