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Marquise|Lab Grown|IGI

1.23ct G VS1 Marquise Lab Grown Diamond

EX • G/VS1 • IGI LG546231405

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG546231405

Diamond specifications and retailer prices

From $431 USD
As of November 1, 2026
Save $731 USD (63%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $1,162 USD at MOH London · As of November 2, 2026
View at MOH London

About this 1.23ct lab-grown marquise diamond

This 1.23ct lab-grown marquise sits in the classic one-carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG546231405 or 546231405. Listed at 7 retailers as of November 1, 2026, with prices from $431 to $1,162, a $731 spread on the same certified stone. MOH London lists it at $1,162. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
G
Color
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG546231405
Dimensions11.06 × 5.69 × 3.49 mm
L/W Ratio1.94
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
11.06 mm5.69 mm1.23 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG546231405
Side View
Table 62.0%Crown 36.2°GirdlePavilion 39.9°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: $1,162 USD|Low: $406 USD|High: $1,176 USD|Avg: $612 USD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 3, 2026
Retailer 3$431 USD
Retailer 5$454 USD
Retailer 2$456 USD
Retailer 4$569 USD
MOH London$1,162 USD

41 data points across 5 retailers

7 retailers$431 USD to $1,162 USD

A
Cheapest Retailer
-
$431 USD
A
Retailer 2
-
$454 USD
View
A
Retailer 3
-
$456 USD
£359 GBP
View
B+
Retailer 4
-
$569 USD
View
B+
Retailer 5
-
$690 USD
View
B
Retailer 6
-
$853 USD
View
Most Expensive
B
MOH London
LG546231405 · Nov 2
$1,162 USD
£915 GBP
View
6 more retailers have this diamond
Prices start from $431 USDSave up to $731 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
1.23ct Marquise
$431 USD