Marquise|Lab Grown|IGI

1.23ct G VS2 Marquise Lab Grown Diamond

VG • G/VS2 • IGI LG541281623

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG541281623

Diamond specifications and retailer prices

From $380 USD
£299 GBP
As of November 2, 2026
Save $622 USD (62%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $1,002 USD at MOH London · As of November 1, 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 VS2 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG541281623 or 541281623. Listed at 4 retailers as of November 1, 2026, with prices from $380 to $1,002, a $622 spread on the same certified stone. MOH London lists it at $1,002. 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

1.23
Carat
G
Color
VS2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.7°
Pavilion angle38.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG541281623
Dimensions11.47 × 5.75 × 3.31 mm
L/W Ratio1.99
Girdle conditionFaceted
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
11.47 mm5.75 mm1.23 ctG / VS2
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG541281623
Side View
Table 60.5%Crown 31.7°Girdle: MED-STKPavilion 38.9°Culet: NoneDepth 57.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 2
Current: $1,002 USD|Low: $357 USD|High: $1,015 USD|Avg: $539 USD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 2, 2026
Retailer 2$380 USD
Retailer 3$382 USD
Retailer 4$455 USD
Retailer 5$505 USD
MOH London$1,002 USD

42 data points across 5 retailers

4 retailers$380 USD to $1,002 USD

A
Cheapest Retailer
-
$380 USD
£299 GBP
A
Retailer 2
-
$382 USD
View
B+
Retailer 3
-
$455 USD
View
Most Expensive
B
MOH London
LG541281623 · Nov 1
$1,002 USD
£789 GBP
View
3 more retailers have this diamond
Prices start from $380 USDSave up to $622 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
$380 USD