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Princess|Lab Grown|IGI

1.57ct I SI1 Princess Lab Grown Diamond

ID • I/SI1 • IGI LG440012079

Shape and cutting style on the report: Princess cut

Certificate IGI LG440012079

Diamond specifications and retailer prices

From £684 GBP
As of November 4, 2026
Save £3,059 GBP (82%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £3,742 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.57ct lab-grown princess diamond

This 1.57ct lab-grown princess sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG440012079 or 440012079. Listed at 10 retailers as of November 4, 2026, with prices from £684 to £3,742, a £3,059 spread on the same certified stone. MOH London lists it at £3,742. 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

1.57
Carat
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle45.5°
Pavilion angle38.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG440012079
Dimensions6.34 × 6.23 × 4.60 mm
L/W Ratio1.02
Culet sizePointed
Cert comments
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Top View
6.34 mm6.23 mm1.57 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG440012079
Side View
Table 69.5%Crown 45.5°Girdle: Slightly ThickPavilion 38.4°Culet: NoneDepth 73.8%

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: Nov 4
Current: £3,742 GBP|Low: £684 GBP|High: £3,803 GBP|Avg: £1,875 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 2£684 GBP
Retailer 3£1,007 GBP
Retailer 5£1,297 GBP
Retailer 7£1,603 GBP
Retailer 4£1,846 GBP
Retailer 6£2,177 GBP
MOH London£3,742 GBP

12 data points across 7 retailers

10 retailers£684 GBP to £3,742 GBP

A
Cheapest Retailer
-
£684 GBP
B+
Retailer 2
-
£1,007 GBP
View
B+
Retailer 3
-
£1,095 GBP
View
B+
Retailer 4
-
£1,168 GBP
View
Retailer 5
-
£1,168 GBP
View
Price last confirmed 25 days ago
B
Retailer 6
-
£1,297 GBP
View
B
Retailer 7
-
£1,846 GBP
View
B
Retailer 8
-
£2,177 GBP
View
B
Retailer 9
-
£2,189 GBP
View
Most Expensive
B
MOH London
LG440012079 · Nov 5
£3,742 GBP
View
9 more retailers have this diamond
Prices start from £684 GBPSave up to £3,059 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
1.57ct Princess
£684 GBP