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3.57ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG632444151

Shape and cutting style on the report: Round brilliant

Certificate IGI LG632444151

Diamond specifications and retailer prices

From £951 GBP
CA$1,770 CAD
As of October 30, 2026
Save £307 GBP (24%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £1,258 GBP at The Diamond Guys · As of October 30, 2026
View at The Diamond Guys

About this 3.57ct lab-grown round diamond

This 3.57ct lab-grown round 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 LG632444151 or 632444151. Listed at 2 retailers as of October 30, 2026, with prices from £951 to £1,258, a £307 spread on the same certified stone. The Diamond Guys lists it at £1,258. 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

3.57
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG632444151
Dimensions9.80 × 9.74 × 6.06 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
9.80 mm9.74 mm3.57 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG632444151
Side View
Table 57.0%Crown 35.1°Girdle: MediumPavilion 40.9°Culet: NoneDepth 62.0%

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: £524 GBP|Low: £193 GBP|High: £3,709 GBP|Avg: £1,139 GBP|-13.5%
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
The Diamond Guys
September 16, 2026
Retailer 7£339 GBP
Retailer 4£462 GBP
Retailer 1£524 GBP
Retailer 6£632 GBP
Retailer 2£669 GBP
Retailer 5£907 GBP
Retailer 8£927 GBP
Retailer 9£951 GBP
Retailer 11£1,112 GBP
Retailer 13£1,258 GBP
The Diamond Guys£1,258 GBP
Retailer 12£1,613 GBP
Retailer 10£1,985 GBP
Retailer 3£2,224 GBP

63 data points across 14 retailers

2 retailers£951 GBP to £1,258 GBP

B+
Cheapest Retailer
-
£951 GBP
CA$1,770 CAD
Most Expensive
B
The Diamond Guys
1954434267 · Oct 30
£1,258 GBP
$1,685 USD
View
1 more retailer has this diamond
Prices start from £951 GBPSave up to £307 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+
3.57ct Round
£951 GBP