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Marquise|Lab Grown|IGI

3.91ct G VS1 Marquise Lab Grown Diamond

EX • G/VS1 • IGI LG810641631

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG810641631

Diamond specifications and retailer prices

From €499 EUR
$558 USD
As of November 3, 2026
Save €2,767 EUR (85%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: €3,266 EUR at Frank Darling · As of November 3, 2026
View at Frank Darling

About this 3.91ct lab-grown marquise diamond

This 3.91ct lab-grown marquise sits in the three to five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG810641631 or 810641631. Listed at 5 retailers as of November 3, 2026, with prices from €499 to €3,266, a €2,767 spread on the same certified stone. Frank Darling lists it at €3,266. 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

3.91
Carat
G
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG810641631
Dimensions16.56 × 8.10 × 5.11 mm
L/W Ratio2.04
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.56 mm8.10 mm3.91 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG810641631
Side View
Table 59.0%Crown 35.6°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 63.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 3
Current: €3,266 EUR|Low: €499 EUR|High: €3,266 EUR|Avg: €1,425 EUR|+0.0%
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 28, 2026
Retailer 2€499 EUR
Retailer 4€697 EUR
Retailer 6€848 EUR
Retailer 5€1,813 EUR
Retailer 3€2,321 EUR
Frank Darling€3,266 EUR

14 data points across 6 retailers

5 retailers€499 EUR to €3,266 EUR

A
Cheapest Retailer
-
€499 EUR
$558 USD
Final sale: no returns
B+
Retailer 2
-
€697 EUR
$779 USD
View
B+
Retailer 3
-
€1,813 EUR
$2,027 USD
View
B+
Retailer 4
-
€2,321 EUR
$2,595 USD
View
Most Expensive
B
Frank Darling
100765882042KD · Nov 3
€3,266 EUR
$3,651 USD
View
4 more retailers have this diamond
Prices start from €499 EURSave up to €2,767 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
3.91ct Marquise
€499 EUR