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Princess|Lab Grown|IGI

1.23ct E SI1 Princess Lab Grown Diamond

ID • E/SI1 • IGI LG555291418

Shape and cutting style on the report: Princess cut

Certificate IGI LG555291418

Diamond specifications and retailer prices

From €141 EUR
As of November 6, 2026
Save €673 EUR (83%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €814 EUR at MOH London · As of November 4, 2026
View at MOH London

About this 1.23ct lab-grown princess diamond

This 1.23ct lab-grown princess 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 LG555291418 or 555291418. Listed at 16 retailers as of November 4, 2026, with prices from €141 to €814, a €673 spread on the same certified stone. MOH London lists it at €814. 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 angle46°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG555291418
Dimensions5.82 × 5.68 × 4.16 mm
L/W Ratio1.02
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
5.82 mm5.68 mm1.23 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG555291418
Side View
Table 71.0%Crown 46°Girdle: MediumPavilion 39.1°Culet: NoneDepth 73.2%

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: €814 EUR|Low: €129 EUR|High: €962 EUR|Avg: €400 EUR|+3.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 6, 2026
Retailer 5€141 EUR
Retailer 3€163 EUR
Retailer 13€175 EUR
Retailer 14€175 EUR
Retailer 9€225 EUR
Retailer 7€236 EUR
Retailer 11€301 EUR
Retailer 2€303 EUR
Retailer 12€339 EUR
Retailer 16€360 EUR
Retailer 4€465 EUR
Retailer 15€561 EUR
Retailer 6€592 EUR
Retailer 10€677 EUR
Retailer 8€678 EUR
MOH London€814 EUR

44 data points across 16 retailers

16 retailers€141 EUR to €814 EUR

A
Cheapest Retailer
-
€141 EUR
A
Retailer 2
-
€163 EUR
View
Retailer 3
-
€175 EUR
View
Price last confirmed 12 days ago
A
Retailer 4
-
€175 EUR
View
A
Retailer 5
-
€225 EUR
View
B+
Retailer 6
-
€236 EUR
View
Retailer 7
-
€301 EUR
View
Price last confirmed 8 days ago
B+
Retailer 8
-
€303 EUR
View
B+
Retailer 9
-
€339 EUR
View
B+
Retailer 10
-
€360 EUR
View
B
Retailer 11
-
€465 EUR
View
B
Retailer 12
-
€561 EUR
View
B
Retailer 13
-
€592 EUR
View
B
Retailer 14
-
€677 EUR
View
Retailer 15
-
€678 EUR
View
Price last confirmed 25 days ago
Most Expensive
B
MOH London
LG555291418 · Nov 4
€814 EUR
£719 GBP
View
15 more retailers have this diamond
Prices start from €141 EURSave up to €673 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 Princess
€141 EUR