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Marquise|Lab Grown|IGI

3.90ct F VS2 Marquise Lab Grown Diamond

ID • F/VS2 • IGI LG685512649

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG685512649

Diamond specifications and retailer prices

From €504 EUR
$565 USD
As of October 30, 2026
Save €3,277 EUR (87%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: €3,780 EUR at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 3.9ct lab-grown marquise diamond

This 3.9ct lab-grown marquise sits in the three to five carat band, graded F colour (colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG685512649 or 685512649. Listed at 23 retailers as of October 30, 2026, with prices from €504 to €3,780, a €3,277 spread on the same certified stone. Brilliant Earth lists it at €3,780. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.90
Carat
F
Color
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG685512649
Dimensions16.69 × 8.01 × 5.03 mm
L/W Ratio2.08
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.69 mm8.01 mm3.90 ctF / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG685512649
Side View
Table 60.0%Crown 34.6°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: €3,780 EUR|Low: €479 EUR|High: €3,780 EUR|Avg: €1,517 EUR
Brilliant Earth
Retailer 2
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Retailer 22
November 2, 2026
Retailer 4€504 EUR
Retailer 17€563 EUR
Retailer 11€563 EUR
Retailer 7€624 EUR
Retailer 10€624 EUR
Retailer 18€744 EUR
Retailer 6€900 EUR
Retailer 8€962 EUR
Retailer 13€974 EUR
Retailer 19€996 EUR
Retailer 21€1,320 EUR
Retailer 3€1,418 EUR
Retailer 2€1,433 EUR
Retailer 5€1,641 EUR
Retailer 14€1,821 EUR
Retailer 16€2,010 EUR
Retailer 12€2,023 EUR
Retailer 9€2,101 EUR
Retailer 15€2,422 EUR
Retailer 22€2,599 EUR
Retailer 20€2,724 EUR
Brilliant Earth€3,780 EUR

39 data points across 22 retailers

23 retailers€504 EUR to €3,780 EUR

A
Cheapest Retailer
-
€504 EUR
$565 USD
A
Retailer 2
-
€563 EUR
$631 USD
View
Final sale: no returns
A
Retailer 3
-
€563 EUR
$632 USD
View
Retailer 4
-
€624 EUR
$700 USD
View
Price last confirmed 17 days ago
A
Retailer 5
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€624 EUR
$700 USD
View
A
Retailer 6
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€744 EUR
$835 USD
View
A
Retailer 7
-
€900 EUR
$1,010 USD
View
B+
Retailer 8
-
€962 EUR
$1,079 USD
View
A
Retailer 9
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€974 EUR
£860 GBP
View
A
Retailer 10
-
€996 EUR
View
A
Retailer 11
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€1,320 EUR
A$2,278 AUD
View
A
Retailer 12
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€1,418 EUR
$1,590 USD
View
A
Retailer 13
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€1,433 EUR
$1,607 USD
View
B+
Retailer 14
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€1,641 EUR
$1,841 USD
View
B+
Retailer 15
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€1,821 EUR
£1,608 GBP
View
B+
Retailer 16
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€1,982 EUR
$2,223 USD
View
B+
Retailer 17
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€2,010 EUR
$2,254 USD
View
B+
Retailer 18
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€2,023 EUR
$2,269 USD
View
B+
Retailer 19
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€2,101 EUR
$2,357 USD
View
Retailer 20
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€2,422 EUR
A$4,180 AUD
View
Price last confirmed 25 days ago
B+
Retailer 21
-
€2,599 EUR
$2,915 USD
View
B
Retailer 22
-
€2,724 EUR
£2,406 GBP
View
Most Expensive
B
Brilliant Earth
14756760A · Nov 2
€3,780 EUR
$4,240 USD
View
22 more retailers have this diamond
Prices start from €504 EURSave up to €3,277 EUR

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
3.90ct Marquise
€504 EUR