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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 $497 USD
As of October 30, 2026
Save $2,075 USD (81%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $2,572 USD 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 $497 to $2,572, a $2,075 spread on the same certified stone. MOH London lists it at $2,572. 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
Color
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: $2,572 USD|Low: $477 USD|High: $2,634 USD|Avg: $1,231 USD|-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$497 USD
Retailer 4$556 USD
Retailer 8$556 USD
Retailer 18$616 USD
Retailer 10$622 USD
Retailer 2$703 USD
Retailer 17$755 USD
Retailer 15$957 USD
Retailer 13$987 USD
Retailer 5$1,025 USD
Retailer 12$1,301 USD
Retailer 14$1,337 USD
Retailer 11$1,451 USD
Retailer 3$1,620 USD
Retailer 7$1,954 USD
Retailer 16$2,007 USD
Retailer 9$2,110 USD
MOH London$2,572 USD

32 data points across 18 retailers

18 retailers$497 USD to $2,572 USD

A
Cheapest Retailer
-
$497 USD
A
Retailer 2
-
$556 USD
View
A
Retailer 3
-
$556 USD
View
Final sale: no returns
A
Retailer 4
-
$616 USD
View
Retailer 5
-
$622 USD
View
Price last confirmed 16 days ago
A
Retailer 6
-
$703 USD
£553 GBP
View
A
Retailer 7
-
$755 USD
View
A
Retailer 8
-
$957 USD
View
A
Retailer 9
-
$987 USD
View
A
Retailer 10
-
$1,025 USD
View
A
Retailer 11
-
$1,301 USD
A$2,002 AUD
View
A
Retailer 12
-
$1,337 USD
ZAR 21,602 ZAR
View
A
Retailer 13
-
$1,451 USD
View
A
Retailer 14
-
$1,620 USD
View
B+
Retailer 15
-
$1,954 USD
SGD 2,640 SGD
View
B+
Retailer 16
-
$2,007 USD
View
B+
Retailer 17
-
$2,110 USD
View
Most Expensive
B+
MOH London
LG818639599 · Nov 1
$2,572 USD
£2,025 GBP
View
17 more retailers have this diamond
Prices start from $497 USDSave up to $2,075 USD

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
$497 USD