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Princess|Lab Grown|IGI

1.03ct E SI1 Princess Lab Grown Diamond

EX • E/SI1 • IGI LG846656679

Shape and cutting style on the report: Princess cut

Certificate IGI LG846656679

Diamond specifications and retailer prices

From £152 GBP
As of November 4, 2026
Save £490 GBP (76%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £642 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.03ct lab-grown princess diamond

This 1.03ct 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 LG846656679 or 846656679. Listed at 11 retailers as of November 4, 2026, with prices from £152 to £642, a £490 spread on the same certified stone. MOH London lists it at £642. 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

1.03
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle46.5°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG846656679
Dimensions5.56 × 5.49 × 3.97 mm
L/W Ratio1.01
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.56 mm5.49 mm1.03 ctE / SI1
OriginLab Grown
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG846656679
Side View
Table 74.0%Crown 46.5°Girdle: MediumPavilion 39.2°Culet: NoneDepth 72.3%

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: £642 GBP|Low: £152 GBP|High: £644 GBP|Avg: £322 GBP|-0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 3£152 GBP
Retailer 7£235 GBP
Retailer 2£236 GBP
Retailer 8£252 GBP
Retailer 4£261 GBP
Retailer 10£319 GBP
Retailer 9£353 GBP
Retailer 5£357 GBP
Retailer 11£377 GBP
Retailer 6£431 GBP
MOH London£642 GBP

10 data points across 11 retailers

11 retailers£152 GBP to £642 GBP

A
Cheapest Retailer
-
£152 GBP
Retailer 2
-
£235 GBP
View
Price last confirmed 8 days ago
B+
Retailer 3
-
£236 GBP
View
B+
Retailer 4
-
£252 GBP
View
B+
Retailer 5
-
£261 GBP
View
Retailer 6
-
£319 GBP
View
Price last confirmed 11 days ago
Retailer 7
-
£353 GBP
View
Price last confirmed 9 days ago
B
Retailer 8
-
£357 GBP
View
B
Retailer 9
-
£377 GBP
View
B
Retailer 10
-
£431 GBP
View
Most Expensive
B
MOH London
LG846656679 · Nov 4
£642 GBP
View
10 more retailers have this diamond
Prices start from £152 GBPSave up to £490 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
1.03ct Princess
£152 GBP