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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 $779 CAD
$558 USD
As of October 31, 2026
Save $4,321 CAD (85%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $5,101 CAD at Frank Darling · As of October 31, 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 October 31, 2026, with prices from $779 to $5,101, a $4,321 spread on the same certified stone. Frank Darling lists it at $5,101. 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
Color
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: Oct 31
Current: $5,101 CAD|Low: $779 CAD|High: $5,101 CAD|Avg: $2,171 CAD|+0.0%
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 28, 2026
Retailer 2$779 CAD
Retailer 4$1,088 CAD
Retailer 6$1,324 CAD
Retailer 5$2,832 CAD
Retailer 3$3,625 CAD
Frank Darling$5,101 CAD

16 data points across 6 retailers

5 retailers$779 CAD to $5,101 CAD

A
Cheapest Retailer
-
$779 CAD
$558 USD
Final sale: no returns
B+
Retailer 2
-
$1,088 CAD
$779 USD
View
B+
Retailer 3
-
$2,832 CAD
$2,027 USD
View
B+
Retailer 4
-
$3,625 CAD
$2,595 USD
View
Most Expensive
B
Frank Darling
100765882042KD · Oct 31
$5,101 CAD
$3,651 USD
View
4 more retailers have this diamond
Prices start from $779 CADSave up to $4,321 CAD

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
$779 CAD