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3.79ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG620455514

Shape and cutting style on the report: Round brilliant

Certificate IGI LG620455514

Diamond specifications and retailer prices

From £1,043 GBP
CA$1,942 CAD
As of October 30, 2026
Save £337 GBP (24%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £1,381 GBP at The Diamond Guys · As of October 30, 2026
View at The Diamond Guys

About this 3.79ct lab-grown round diamond

This 3.79ct 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 LG620455514 or 620455514. Listed at 2 retailers as of October 30, 2026, with prices from £1,043 to £1,381, a £337 spread on the same certified stone. The Diamond Guys lists it at £1,381. 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

3.79
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG620455514
Dimensions10.18 × 10.12 × 6.09 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
10.18 mm10.12 mm3.79 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG620455514
Side View
Table 58.0%Crown 34.1°Girdle: MediumPavilion 40.8°Culet: NoneDepth 60.0%

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: £858 GBP|Low: £210 GBP|High: £3,941 GBP|Avg: £1,121 GBP|-8.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
The Diamond Guys
August 3, 2026
Retailer 3£567 GBP
Retailer 5£615 GBP
Retailer 9£675 GBP
Retailer 11£705 GBP
Retailer 8£806 GBP
Retailer 4£822 GBP
Retailer 1£858 GBP
Retailer 6£1,043 GBP
The Diamond Guys£1,381 GBP
Retailer 10£2,149 GBP
Retailer 2£2,329 GBP
Retailer 7£3,941 GBP

61 data points across 12 retailers

2 retailers£1,043 GBP to £1,381 GBP

B+
Cheapest Retailer
-
£1,043 GBP
CA$1,942 CAD
Most Expensive
B
The Diamond Guys
1954434261 · Oct 30
£1,381 GBP
$1,850 USD
View
1 more retailer has this diamond
Prices start from £1,043 GBPSave up to £337 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+
3.79ct Round
£1,043 GBP