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Princess|Lab Grown|IGI

1.50ct D SI1 Princess Lab Grown Diamond

EX • D/SI1 • IGI LG519261650

Shape and cutting style on the report: Princess cut

Certificate IGI LG519261650

Diamond specifications and retailer prices

From £334 GBP
$448 USD
As of October 30, 2026
Save £444 GBP (57%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £778 GBP at MOH London · As of October 26, 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 top-tier cut grade and certified by IGI LG519261650 or 519261650. Listed at 6 retailers as of October 26, 2026, with prices from £334 to £778, a £444 spread on the same certified stone. MOH London lists it at £778. 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
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle49.4°
Pavilion angle38.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG519261650
Dimensions6.16 × 6.14 × 4.54 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
6.16 mm6.14 mm1.50 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG519261650
Side View
Table 66.0%Crown 49.4°Girdle: MediumPavilion 38.2°Culet: NoneDepth 73.9%

Caratlytics Score

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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 30
Current: £778 GBP|Low: £334 GBP|High: £960 GBP|Avg: £520 GBP|-11.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 30, 2026
Retailer 5£334 GBP
Retailer 2£358 GBP
Retailer 3£366 GBP
Retailer 6£440 GBP
Retailer 4£761 GBP
MOH London£778 GBP

30 data points across 6 retailers

6 retailers£334 GBP to £778 GBP

B+
Cheapest Retailer
-
£334 GBP
$448 USD
A
Retailer 2
-
£358 GBP
View
A
Retailer 3
-
£366 GBP
$490 USD
View
B+
Retailer 4
-
£440 GBP
$590 USD
View
Retailer 5
-
£761 GBP
$1,020 USD
View
Price last confirmed 10 days ago
Most Expensive
B
MOH London
LG519261650 · Oct 26
£778 GBP
View
5 more retailers have this diamond
Prices start from £334 GBPSave up to £444 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
£334 GBP