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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 €384 EUR
$431 USD
As of October 30, 2026
Save €657 EUR (63%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: €1,042 EUR at MOH London · As of October 29, 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 6 retailers as of October 29, 2026, with prices from €384 to €1,042, a €657 spread on the same certified stone. MOH London lists it at €1,042. 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: Oct 30
Current: €1,042 EUR|Low: €362 EUR|High: €1,049 EUR|Avg: €546 EUR|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 31, 2026
Retailer 3€384 EUR
Retailer 2€403 EUR
Retailer 5€405 EUR
Retailer 4€507 EUR
MOH London€1,042 EUR

38 data points across 5 retailers

6 retailers€384 EUR to €1,042 EUR

A
Cheapest Retailer
-
€384 EUR
$431 USD
A
Retailer 2
-
€403 EUR
£356 GBP
View
A
Retailer 3
-
€405 EUR
$454 USD
View
B+
Retailer 4
-
€507 EUR
$569 USD
View
B
Retailer 5
-
€760 EUR
$853 USD
View
Most Expensive
B
MOH London
LG546231405 · Oct 29
€1,042 EUR
£920 GBP
View
5 more retailers have this diamond
Prices start from €384 EURSave up to €657 EUR

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
€384 EUR