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Marquise|Lab Grown|IGI

3.09ct H VS1 Marquise Lab Grown Diamond

EX • H/VS1 • IGI LG818639599

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818639599

Diamond specifications and retailer prices

From $708 AUD
$497 USD
As of October 30, 2026
Save $2,954 AUD (81%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $3,661 AUD at MOH London · As of November 1, 2026
View at MOH London

About this 3.09ct lab-grown marquise diamond

This 3.09ct lab-grown marquise sits in the three to five carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG818639599 or 818639599. Listed at 18 retailers as of October 30, 2026, with prices from $708 to $3,661, a $2,954 spread on the same certified stone. MOH London lists it at $3,661. 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

3.09
Carat
H
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818639599
Dimensions15.45 × 7.59 × 4.66 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
15.45 mm7.59 mm3.09 ctH / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818639599
Side View
Table 62.0%Crown 33.5°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 61.4%

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: Oct 30
Current: $3,661 AUD|Low: $679 AUD|High: $3,750 AUD|Avg: $1,753 AUD|-2.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 1, 2026
Retailer 6$708 AUD
Retailer 4$792 AUD
Retailer 8$792 AUD
Retailer 18$877 AUD
Retailer 10$885 AUD
Retailer 2$1,001 AUD
Retailer 17$1,075 AUD
Retailer 15$1,362 AUD
Retailer 13$1,405 AUD
Retailer 5$1,459 AUD
Retailer 12$1,853 AUD
Retailer 14$1,904 AUD
Retailer 11$2,066 AUD
Retailer 3$2,306 AUD
Retailer 7$2,781 AUD
Retailer 16$2,857 AUD
Retailer 9$3,004 AUD
MOH London$3,661 AUD

32 data points across 18 retailers

18 retailers$708 AUD to $3,661 AUD

A
Cheapest Retailer
-
$708 AUD
$497 USD
A
Retailer 2
-
$792 AUD
$556 USD
View
A
Retailer 3
-
$792 AUD
$556 USD
View
Final sale: no returns
A
Retailer 4
-
$877 AUD
$616 USD
View
Retailer 5
-
$885 AUD
$622 USD
View
Price last confirmed 16 days ago
A
Retailer 6
-
$1,001 AUD
£553 GBP
View
A
Retailer 7
-
$1,075 AUD
$755 USD
View
A
Retailer 8
-
$1,362 AUD
$957 USD
View
A
Retailer 9
-
$1,405 AUD
$987 USD
View
A
Retailer 10
-
$1,459 AUD
$1,025 USD
View
A
Retailer 11
-
$1,853 AUD
View
A
Retailer 12
-
$1,904 AUD
ZAR 21,602 ZAR
View
A
Retailer 13
-
$2,066 AUD
$1,451 USD
View
A
Retailer 14
-
$2,306 AUD
$1,620 USD
View
B+
Retailer 15
-
$2,781 AUD
SGD 2,640 SGD
View
B+
Retailer 16
-
$2,857 AUD
$2,007 USD
View
B+
Retailer 17
-
$3,004 AUD
$2,110 USD
View
Most Expensive
B+
MOH London
LG818639599 · Nov 1
$3,661 AUD
£2,025 GBP
View
17 more retailers have this diamond
Prices start from $708 AUDSave up to $2,954 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
3.09ct Marquise
$708 AUD