CaratHunter
Plans
Marquise|Lab Grown|IGI

1.23ct E SI1 Marquise Lab Grown Diamond

ID • E/SI1 • IGI LG733544094

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG733544094

Diamond specifications and retailer prices

From $490 SGD
As of November 6, 2026
Save $801 SGD (62%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $1,291 SGD at MOH London · As of November 5, 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG733544094 or 733544094. Listed at 7 retailers as of November 5, 2026, with prices from $490 to $1,291, a $801 spread on the same certified stone. MOH London lists it at $1,291. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.23
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle39.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG733544094
Dimensions11.29 × 5.49 × 3.42 mm
L/W Ratio2.06
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.29 mm5.49 mm1.23 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG733544094
Side View
Table 60.0%Crown 36.5°Girdle: MED-STKPavilion 39.7°Culet: NoneDepth 62.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $1,291 SGD|Low: $409 SGD|High: $1,309 SGD|Avg: $668 SGD|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 2$490 SGD
Retailer 3$493 SGD
Retailer 5$493 SGD
Retailer 6$524 SGD
Retailer 4$691 SGD
Retailer 7$837 SGD
MOH London$1,291 SGD

38 data points across 7 retailers

7 retailers$490 SGD to $1,291 SGD

A
Cheapest Retailer
-
$490 SGD
A
Retailer 2
-
$493 SGD
View
Retailer 3
-
$493 SGD
View
Price last confirmed 10 days ago
A
Retailer 4
-
$524 SGD
View
B+
Retailer 5
-
$691 SGD
View
Retailer 6
-
$837 SGD
View
Price last confirmed 43 days ago
Most Expensive
B
MOH London
LG733544094 · Nov 5
$1,291 SGD
£796 GBP
View
6 more retailers have this diamond
Prices start from $490 SGDSave up to $801 SGD

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
$490 SGD