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Princess|Lab Grown|IGI

1.22ct E SI1 Princess Lab Grown Diamond

ID • E/SI1 • IGI LG523204811

Shape and cutting style on the report: Princess cut

Certificate IGI LG523204811

Diamond specifications and retailer prices

From £154 GBP
$206 USD
As of October 28, 2026
Save £646 GBP (81%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £800 GBP at MOH London · As of October 25, 2026
View at MOH London

About this 1.22ct lab-grown princess diamond

This 1.22ct 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 LG523204811 or 523204811. Listed at 14 retailers as of October 25, 2026, with prices from £154 to £800, a £646 spread on the same certified stone. MOH London lists it at £800. 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

1.22
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.1°
Pavilion angle38.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG523204811
Dimensions5.78 × 5.75 × 4.22 mm
L/W Ratio1.01
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
5.78 mm5.75 mm1.22 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG523204811
Side View
Table 61.0%Crown 41.1°Girdle: MediumPavilion 38.3°Culet: NoneDepth 73.4%

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 28
Current: £800 GBP|Low: £109 GBP|High: £836 GBP|Avg: £420 GBP|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 8£154 GBP
Retailer 9£231 GBP
Retailer 7£305 GBP
Retailer 3£309 GBP
Retailer 4£316 GBP
Retailer 6£431 GBP
Retailer 5£496 GBP
Retailer 2£567 GBP
MOH London£800 GBP

42 data points across 9 retailers

14 retailers£154 GBP to £800 GBP

Retailer 1
-
£138 GBP
$185 USD
Price last confirmed 38 days ago
A
Retailer 2
-
£154 GBP
$206 USD
View
Final sale: no returns
Retailer 3
-
£160 GBP
$214 USD
View
Price last confirmed 36 days ago
Retailer 4
-
£169 GBP
$226 USD
View
Price last confirmed 35 days ago
B+
Retailer 5
-
£231 GBP
$310 USD
View
B+
Retailer 6
-
£305 GBP
$408 USD
View
B+
Retailer 7
-
£309 GBP
View
B+
Retailer 8
-
£316 GBP
€403 EUR
View
B+
Retailer 9
-
£431 GBP
$578 USD
View
Retailer 10
-
£496 GBP
$665 USD
View
Price last confirmed 12 days ago
B
Retailer 11
-
£559 GBP
SGD 1,013 SGD
View
B
Retailer 12
-
£567 GBP
$760 USD
View
B
Retailer 13
-
£589 GBP
$790 USD
View
Most Expensive
B
MOH London
LG523204811 · Oct 25
£800 GBP
View
13 more retailers have this diamond
Prices start from £154 GBPSave up to £646 GBP

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
1.22ct Princess
£154 GBP