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Marquise|Lab Grown|IGI

1.09ct G SI1 Marquise Lab Grown Diamond

VG • G/SI1 • IGI LG839666703

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG839666703

Diamond specifications and retailer prices

From $402 AUD
£221 GBP
As of November 3, 2026
Save $1,600 AUD (80%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $2,002 AUD at MOH London · As of November 2, 2026
View at MOH London

About this 1.09ct lab-grown marquise diamond

This 1.09ct lab-grown marquise sits in the classic one-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG839666703 or 839666703. Listed at 5 retailers as of November 2, 2026, with prices from $402 to $2,002, a $1,600 spread on the same certified stone. MOH London lists it at $2,002. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.09
Carat
G
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.5°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839666703
Dimensions10.95 × 5.17 × 3.29 mm
L/W Ratio2.12
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.95 mm5.17 mm1.09 ctG / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839666703
Side View
Table 62.0%Crown 38.5°Girdle: MED-STKPavilion 40°Culet: NoneDepth 63.6%

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 3
Current: $2,002 AUD|Low: $392 AUD|High: $2,022 AUD|Avg: $750 AUD|-1.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 3, 2026
Retailer 2$402 AUD
Retailer 5$451 AUD
Retailer 3$455 AUD
Retailer 4$460 AUD
MOH London$2,002 AUD

21 data points across 5 retailers

5 retailers$402 AUD to $2,002 AUD

A
Cheapest Retailer
-
$402 AUD
£221 GBP
B+
Retailer 2
-
$451 AUD
$315 USD
View
A
Retailer 3
-
$455 AUD
£250 GBP
View
A
Retailer 4
-
$460 AUD
$321 USD
View
Most Expensive
B
MOH London
LG839666703 · Nov 2
$2,002 AUD
£1,101 GBP
View
4 more retailers have this diamond
Prices start from $402 AUDSave up to $1,600 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
1.09ct Marquise
$402 AUD