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Princess|Lab Grown|IGI

1.50ct E SI1 Princess Lab Grown Diamond

EX • E/SI1 • IGI LG557240871

Shape and cutting style on the report: Princess cut

Certificate IGI LG557240871

Diamond specifications and retailer prices

From £173 GBP
$231 USD
As of October 30, 2026
Save £693 GBP (80%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £867 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.5ct lab-grown princess diamond

This 1.5ct lab-grown princess sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG557240871 or 557240871. Listed at 13 retailers as of October 29, 2026, with prices from £173 to £867, a £693 spread on the same certified stone. MOH London lists it at £867. 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

1.50
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.3°
Pavilion angle39°
OriginLab Grown
Grading LabIGI
CertificateIGI LG557240871
Dimensions6.33 × 6.32 × 4.45 mm
L/W Ratio1.00
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
6.33 mm6.32 mm1.50 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG557240871
Side View
Table 65.5%Crown 39.3°Girdle: MediumPavilion 39°Culet: NoneDepth 70.4%

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: £867 GBP|Low: £167 GBP|High: £873 GBP|Avg: £422 GBP|+0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 8£173 GBP
Retailer 3£201 GBP
Retailer 9£216 GBP
Retailer 12£216 GBP
Retailer 2£276 GBP
Retailer 10£365 GBP
Retailer 5£406 GBP
Retailer 4£460 GBP
Retailer 11£692 GBP
Retailer 7£694 GBP
Retailer 6£695 GBP
MOH London£867 GBP

44 data points across 12 retailers

13 retailers£173 GBP to £867 GBP

A
Cheapest Retailer
-
£173 GBP
$231 USD
A
Retailer 2
-
£201 GBP
$268 USD
View
A
Retailer 3
-
£216 GBP
$287 USD
View
A
Retailer 4
-
£216 GBP
$287 USD
View
A
Retailer 5
-
£276 GBP
View
B+
Retailer 6
-
£346 GBP
$461 USD
View
B+
Retailer 7
-
£365 GBP
$486 USD
View
B+
Retailer 8
-
£406 GBP
View
B+
Retailer 9
-
£460 GBP
$613 USD
View
B
Retailer 10
-
£692 GBP
$921 USD
View
B
Retailer 11
-
£694 GBP
$924 USD
View
B
Retailer 12
-
£695 GBP
$925 USD
View
Most Expensive
B
MOH London
LG557240871 · Oct 29
£867 GBP
View
12 more retailers have this diamond
Prices start from £173 GBPSave up to £693 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
1.50ct Princess
£173 GBP