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Marquise|Lab Grown|IGI

6.31ct G VS2 Marquise Lab Grown Diamond

ID • G/VS2 • IGI LG636494604

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG636494604

Diamond specifications and retailer prices

From $3,055 AUD
$2,146 USD
As of November 2, 2026
Save $4,306 AUD (58%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $7,361 AUD at Brilliance · As of November 1, 2026
View at Brilliance

About this 6.31ct lab-grown marquise diamond

This 6.31ct lab-grown marquise sits in the over five carat band, graded G colour (near-colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG636494604 or 636494604. Listed at 4 retailers as of November 1, 2026, with prices from $3,055 to $7,361, a $4,306 spread on the same certified stone. Brilliance lists it at $7,361. 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

6.31
Carat
G
Colour
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG636494604
Dimensions18.94 × 9.60 × 6.02 mm
L/W Ratio1.97
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
18.94 mm9.60 mm6.31 ctG / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG636494604
Side View
Table 60.0%Crown 35.7°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 62.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 2
Current: $7,361 AUD|Low: $3,055 AUD|High: $7,361 AUD|Avg: $6,032 AUD
Brilliance
Retailer 2
Retailer 3
Retailer 4
October 18, 2026
Retailer 4$3,055 AUD
Retailer 2$6,356 AUD
Retailer 3$7,315 AUD
Brilliance$7,361 AUD

3 data points across 4 retailers

4 retailers$3,055 AUD to $7,361 AUD

A
Cheapest Retailer
-
$3,055 AUD
$2,146 USD
B
Retailer 2
-
$6,356 AUD
$4,465 USD
View
B
Retailer 3
-
$7,315 AUD
$5,138 USD
View
Most Expensive
B
Brilliance
D24957292 · Nov 1
$7,361 AUD
$5,171 USD
View
3 more retailers have this diamond
Prices start from $3,055 AUDSave up to $4,306 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
6.31ct Marquise
$3,055 AUD