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Princess|Lab Grown|IGI

3.10ct F SI1 Princess Lab Grown Diamond

EX • F/SI1 • IGI LG659428500

Shape and cutting style on the report: Princess cut

Certificate IGI LG659428500

Diamond specifications and retailer prices

From £315 GBP
$424 USD
As of November 4, 2026
1 retailer carries this diamond
Only listing: £315 GBP at William & Sons Jewelers
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 William & Sons Jewelers

About this 3.1ct lab-grown princess diamond

This 3.1ct lab-grown princess sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG659428500 or 659428500. Listed at a single retailer as of November 4, 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

3.10
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.3°
Pavilion angle38.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG659428500
Dimensions7.91 × 7.87 × 5.64 mm
L/W Ratio1.01
Culet sizePointed
Top View
7.91 mm7.87 mm3.10 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG659428500
Side View
Table 67.0%Crown 40.3°Girdle: Slightly ThickPavilion 38.2°Culet: NoneDepth 71.7%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 4
Current: £953 GBP|Low: £225 GBP|High: £2,650 GBP|Avg: £1,190 GBP|-37.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
William & Sons Jewelers
September 24, 2026
William & Sons Jewelers£315 GBP
Retailer 5£551 GBP
Retailer 2£672 GBP
Retailer 4£681 GBP
Retailer 3£756 GBP
Retailer 1£953 GBP
Retailer 7£1,157 GBP
Retailer 6£1,861 GBP

39 data points across 8 retailers

1 retailer

B+
William & Sons Jewelers
cert_LG659428500 · Nov 4
£315 GBP
$424 USD
View
Final sale: no returns

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.

B+
3.10ct Princess
£315 GBP