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Round|Lab Grown|IGI

3.10ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG627411219

Shape and cutting style on the report: Round brilliant

Certificate IGI LG627411219

Diamond specifications and retailer prices

From £924 GBP
CA$1,719 CAD
As of October 30, 2026
Save £298 GBP (24%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £1,222 GBP at The Diamond Guys · As of October 30, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG627411219 or 627411219. Listed at 3 retailers as of October 30, 2026, with prices from £924 to £1,222, a £298 spread on the same certified stone. The Diamond Guys lists it at £1,222. 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
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG627411219
Dimensions9.46 × 9.41 × 5.74 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
9.46 mm9.41 mm3.10 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG627411219
Side View
Table 56.0%Crown 34°Girdle: MediumPavilion 40.7°Culet: NoneDepth 60.9%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 30
Current: £260 GBP|Low: £185 GBP|High: £1,918 GBP|Avg: £808 GBP|+40.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
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Retailer 15
The Diamond Guys
October 4, 2026
Retailer 1£260 GBP
Retailer 13£284 GBP
Retailer 8£288 GBP
Retailer 11£448 GBP
Retailer 12£450 GBP
Retailer 9£487 GBP
Retailer 10£510 GBP
Retailer 2£744 GBP
Retailer 15£746 GBP
Retailer 3£784 GBP
Retailer 14£805 GBP
Retailer 5£924 GBP
The Diamond Guys£1,222 GBP
Retailer 7£1,403 GBP
Retailer 4£1,672 GBP
Retailer 6£1,918 GBP

4 data points across 16 retailers

3 retailers£924 GBP to £1,222 GBP

Retailer 1
-
£284 GBP
$381 USD
Price last confirmed 46 days ago
B+
Retailer 2
-
£924 GBP
CA$1,719 CAD
View
Most Expensive
B
The Diamond Guys
1954434481 · Oct 30
£1,222 GBP
$1,637 USD
View
2 more retailers have this diamond
Prices start from £924 GBPSave up to £298 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
£924 GBP