CaratHunter
Plans
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
$158 USD
As of October 30, 2026
Save €683 EUR (83%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €824 EUR at MOH London · As of October 29, 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 October 29, 2026, with prices from €141 to €824, a €683 spread on the same certified stone. MOH London lists it at €824. 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
Color
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: Oct 30
Current: €824 EUR|Low: €130 EUR|High: €967 EUR|Avg: €384 EUR|+5.4%
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
October 31, 2026
Retailer 5€141 EUR
Retailer 3€164 EUR
Retailer 13€175 EUR
Retailer 14€175 EUR
Retailer 10€228 EUR
Retailer 7€237 EUR
Retailer 11€303 EUR
Retailer 2€306 EUR
Retailer 12€342 EUR
Retailer 16€362 EUR
Retailer 4€467 EUR
Retailer 15€564 EUR
Retailer 6€595 EUR
Retailer 9€680 EUR
Retailer 8€682 EUR
MOH London€824 EUR

44 data points across 16 retailers

16 retailers€141 EUR to €824 EUR

A
Cheapest Retailer
-
€141 EUR
$158 USD
A
Retailer 2
-
€164 EUR
$183 USD
View
A
Retailer 3
-
€175 EUR
$196 USD
View
A
Retailer 4
-
€175 EUR
$196 USD
View
A
Retailer 5
-
€228 EUR
£201 GBP
View
B+
Retailer 6
-
€237 EUR
$265 USD
View
A
Retailer 7
-
€303 EUR
View
A
Retailer 8
-
€306 EUR
£269 GBP
View
B+
Retailer 9
-
€342 EUR
£301 GBP
View
B+
Retailer 10
-
€362 EUR
$404 USD
View
B+
Retailer 11
-
€467 EUR
$522 USD
View
B
Retailer 12
-
€564 EUR
$630 USD
View
B
Retailer 13
-
€595 EUR
$665 USD
View
B
Retailer 14
-
€680 EUR
$760 USD
View
Retailer 15
-
€682 EUR
SGD 1,029 SGD
View
Price last confirmed 19 days ago
Most Expensive
B
MOH London
LG555291418 · Oct 29
€824 EUR
£725 GBP
View
15 more retailers have this diamond
Prices start from €141 EURSave up to €683 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