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Round|Lab Grown|IGI

3.10ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG628472259

Shape and cutting style on the report: Round brilliant

Certificate IGI LG628472259

Diamond specifications and retailer prices

From £919 GBP
As of November 5, 2026
Save £297 GBP (24%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £1,216 GBP at The Diamond Guys · As of November 6, 2026
View at The Diamond Guys

About this 3.1ct lab-grown round diamond

This 3.1ct lab-grown round 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 LG628472259 or 628472259. Listed at 3 retailers as of November 5, 2026, with prices from £919 to £1,216, a £297 spread on the same certified stone. The Diamond Guys lists it at £1,216. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG628472259
Dimensions9.27 × 9.22 × 5.79 mm
L/W Ratio1.01
Girdle conditionFaceted
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
9.27 mm9.22 mm3.10 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG628472259
Side View
Table 58.0%Crown 36.5°Girdle: MediumPavilion 40.8°Culet: NoneDepth 62.6%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 5
Current: £247 GBP|Low: £181 GBP|High: £2,014 GBP|Avg: £904 GBP|+31.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
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Retailer 14
The Diamond Guys
September 18, 2026
Retailer 1£247 GBP
Retailer 13£282 GBP
Retailer 8£285 GBP
Retailer 11£396 GBP
Retailer 7£401 GBP
Retailer 12£447 GBP
Retailer 9£484 GBP
Retailer 10£507 GBP
Retailer 14£713 GBP
Retailer 3£773 GBP
Retailer 2£792 GBP
Retailer 4£919 GBP
The Diamond Guys£1,216 GBP
Retailer 6£1,430 GBP
Retailer 5£1,939 GBP

66 data points across 15 retailers

3 retailers£919 GBP to £1,216 GBP

Retailer 1
-
£282 GBP
Price last confirmed 51 days ago
B+
Retailer 2
-
£919 GBP
View
Most Expensive
B
The Diamond Guys
1954434398 · Nov 6
£1,216 GBP
$1,637 USD
View
2 more retailers have this diamond
Prices start from £919 GBPSave up to £297 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.

B+
3.10ct Round
£919 GBP