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Princess|Lab Grown|IGI

1.03ct D SI1 Princess Lab Grown Diamond

ID • D/SI1 • IGI LG828643379

Shape and cutting style on the report: Princess cut

Certificate IGI LG828643379

Diamond specifications and retailer prices

From £153 GBP
As of November 6, 2026
Save £285 GBP (65%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £438 GBP at Friendly Diamonds · As of November 4, 2026
View at Friendly Diamonds

About this 1.03ct lab-grown princess diamond

This 1.03ct lab-grown princess sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG828643379 or 828643379. Listed at 7 retailers as of November 4, 2026, with prices from £153 to £438, a £285 spread on the same certified stone. Friendly Diamonds lists it at £438. 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
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.3°
Pavilion angle37.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG828643379
Dimensions5.66 × 5.47 × 3.74 mm
L/W Ratio1.03
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.66 mm5.47 mm1.03 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG828643379
Side View
Table 69.0%Crown 40.3°Girdle: STK-THKPavilion 37.1°Culet: NoneDepth 68.4%

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: Nov 6
Current: £438 GBP|Low: £153 GBP|High: £448 GBP|Avg: £270 GBP|+10.7%
Friendly Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 2£153 GBP
Retailer 3£218 GBP
Retailer 7£241 GBP
Retailer 6£244 GBP
Retailer 4£244 GBP
Retailer 5£368 GBP
Friendly Diamonds£438 GBP

38 data points across 7 retailers

7 retailers£153 GBP to £438 GBP

A
Cheapest Retailer
-
£153 GBP
A
Retailer 2
-
£218 GBP
View
B+
Retailer 3
-
£241 GBP
View
B+
Retailer 4
-
£244 GBP
View
B+
Retailer 5
-
£244 GBP
View
B
Retailer 6
-
£368 GBP
View
Most Expensive
B
Friendly Diamonds
5834124 · Nov 4
£438 GBP
$590 USD
View
6 more retailers have this diamond
Prices start from £153 GBPSave up to £285 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
£153 GBP