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Princess|Lab Grown|IGI

1.50ct D SI1 Princess Lab Grown Diamond

GD • D/SI1 • IGI LG574340057

Shape and cutting style on the report: Princess cut

Certificate IGI LG574340057

Diamond specifications and retailer prices

From £245 GBP
$328 USD
As of October 30, 2026
Save £606 GBP (71%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £851 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 D colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG574340057 or 574340057. Listed at 7 retailers as of October 29, 2026, with prices from £245 to £851, a £606 spread on the same certified stone. MOH London lists it at £851. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.50
Carat
D
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle44°
Pavilion angle37.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG574340057
Dimensions5.99 × 5.96 × 4.42 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
5.99 mm5.96 mm1.50 ctD / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG574340057
Side View
Table 67.5%Crown 44°Girdle: MED-STKPavilion 37.8°Culet: NoneDepth 74.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £851 GBP|Low: £245 GBP|High: £851 GBP|Avg: £501 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 4£245 GBP
Retailer 2£331 GBP
Retailer 3£362 GBP
Retailer 5£372 GBP
Retailer 8£514 GBP
Retailer 7£622 GBP
Retailer 6£768 GBP
MOH London£851 GBP

14 data points across 8 retailers

7 retailers£245 GBP to £851 GBP

B+
Cheapest Retailer
-
£245 GBP
$328 USD
B+
Retailer 2
-
£331 GBP
View
B+
Retailer 3
-
£362 GBP
$485 USD
View
B+
Retailer 4
-
£372 GBP
$499 USD
View
B
Retailer 5
-
£622 GBP
$833 USD
View
Retailer 6
-
£768 GBP
$1,029 USD
View
Price last confirmed 72 days ago
Most Expensive
B
MOH London
LG574340057 · Oct 29
£851 GBP
View
6 more retailers have this diamond
Prices start from £245 GBPSave up to £606 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.

B+
1.50ct Princess
£245 GBP