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Princess|Lab Grown|IGI

1.01ct E SI1 Princess Lab Grown Diamond

VG • E/SI1 • IGI LG839620487

Shape and cutting style on the report: Princess cut

Certificate IGI LG839620487

Diamond specifications and retailer prices

From £122 GBP
As of November 5, 2026
Save £309 GBP (72%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £431 GBP at Brilliant Earth · As of November 1, 2026
View at Brilliant Earth

About this 1.01ct lab-grown princess diamond

This 1.01ct lab-grown princess sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG839620487 or 839620487. Listed at 3 retailers as of November 1, 2026, with prices from £122 to £431, a £309 spread on the same certified stone. Brilliant Earth lists it at £431. 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

1.01
Carat
E
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.9°
Pavilion angle38.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839620487
Dimensions5.51 × 5.46 × 3.88 mm
L/W Ratio1.01
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.51 mm5.46 mm1.01 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839620487
Side View
Table 68.0%Crown 40.9°Girdle: MediumPavilion 38.7°Culet: NoneDepth 71.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 5
Current: £431 GBP|Low: £122 GBP|High: £661 GBP|Avg: £378 GBP|-34.8%
Brilliant Earth
Retailer 2
Retailer 3
November 3, 2026
Retailer 3£122 GBP
Retailer 2£241 GBP
Brilliant Earth£431 GBP

30 data points across 3 retailers

3 retailers£122 GBP to £431 GBP

A
Cheapest Retailer
-
£122 GBP
Final sale: no returns
B+
Retailer 2
-
£241 GBP
View
Most Expensive
B
Brilliant Earth
21583778A · Nov 1
£431 GBP
$580 USD
View
2 more retailers have this diamond
Prices start from £122 GBPSave up to £309 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
1.01ct Princess
£122 GBP