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Princess|Lab Grown|IGI

3.56ct E SI1 Princess Lab Grown Diamond

EX • E/SI1 • IGI LG589312766

Shape and cutting style on the report: Princess cut

Certificate IGI LG589312766

Diamond specifications and retailer prices

From £1,122 GBP
As of October 29, 2026
1 retailer carries this diamond
Only listing: £1,122 GBP at Diamond Quarter
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Diamond Quarter

About this 3.56ct lab-grown princess diamond

This 3.56ct lab-grown princess sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG589312766 or 589312766. Listed at a single retailer as of October 29, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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

3.56
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.7°
Pavilion angle37.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG589312766
Dimensions8.57 × 8.30 × 5.65 mm
L/W Ratio1.03
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.57 mm8.30 mm3.56 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG589312766
Side View
Table 72.0%Crown 42.7°Girdle: MediumPavilion 37.7°Culet: NoneDepth 68.1%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 29
Current: £1,122 GBP|Low: £225 GBP|High: £4,325 GBP|Avg: £1,149 GBP
Diamond Quarter
Retailer 2
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Retailer 4
Retailer 5
Retailer 6
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Retailer 12
June 13, 2026
Retailer 2£225 GBP
Retailer 8£520 GBP
Retailer 4£520 GBP
Retailer 5£661 GBP
Retailer 6£683 GBP
Retailer 7£730 GBP
Retailer 10£791 GBP
Retailer 12£869 GBP
Diamond Quarter£1,122 GBP
Retailer 11£1,702 GBP
Retailer 3£1,884 GBP
Retailer 9£4,325 GBP

61 data points across 12 retailers

1 retailer

B
Diamond Quarter
3.56SI1ELG666451N · Oct 29
£1,122 GBP
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B
3.56ct Princess
£1,122 GBP