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Marquise|Lab Grown|IGI

3.91ct G VVS2 Marquise Lab Grown Diamond

EX • G/VVS2 • IGI LG811681978

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG811681978

Diamond specifications and retailer prices

From $823 AUD
$578 USD
As of November 1, 2026
Save $5,603 AUD (87%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $6,426 AUD at Frank Darling · As of November 2, 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 VVS2 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG811681978 or 811681978. Listed at 5 retailers as of November 1, 2026, with prices from $823 to $6,426, a $5,603 spread on the same certified stone. Frank Darling lists it at $6,426. 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
VVS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811681978
Dimensions15.96 × 8.47 × 5.19 mm
L/W Ratio1.88
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.96 mm8.47 mm3.91 ctG / VVS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811681978
Side View
Table 61.0%Crown 35.7°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.3%

Caratlytics Score

How it works →
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: Nov 1
Current: $6,426 AUD|Low: $823 AUD|High: $6,426 AUD|Avg: $2,551 AUD|+0.0%
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 27, 2026
Retailer 3$823 AUD
Retailer 2$1,150 AUD
Retailer 6$1,405 AUD
Retailer 5$2,990 AUD
Retailer 4$4,193 AUD
Frank Darling$6,426 AUD

16 data points across 6 retailers

5 retailers$823 AUD to $6,426 AUD

A
Cheapest Retailer
-
$823 AUD
$578 USD
Final sale: no returns
B+
Retailer 2
-
$1,150 AUD
$808 USD
View
B+
Retailer 3
-
$2,990 AUD
$2,100 USD
View
B
Retailer 4
-
$4,193 AUD
$2,945 USD
View
Most Expensive
B
Frank Darling
100750520547KD · Nov 2
$6,426 AUD
$4,514 USD
View
4 more retailers have this diamond
Prices start from $823 AUDSave up to $5,603 AUD

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
$823 AUD