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3.75ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG633485362

Shape and cutting style on the report: Round brilliant

Certificate IGI LG633485362

Diamond specifications and retailer prices

From £1,016 GBP
CA$1,890 CAD
As of October 30, 2026
Save £328 GBP (24%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £1,343 GBP at The Diamond Guys · As of October 30, 2026
View at The Diamond Guys

About this 3.75ct lab-grown round diamond

This 3.75ct 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 LG633485362 or 633485362. Listed at 2 retailers as of October 30, 2026, with prices from £1,016 to £1,343, a £328 spread on the same certified stone. The Diamond Guys lists it at £1,343. 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

3.75
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG633485362
Dimensions10.04 × 10.02 × 6.08 mm
L/W Ratio1.00
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
10.04 mm10.02 mm3.75 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG633485362
Side View
Table 59.0%Crown 34.1°Girdle: MediumPavilion 40.8°Culet: NoneDepth 60.6%

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: £1,709 GBP|Low: £208 GBP|High: £3,896 GBP|Avg: £1,101 GBP|-3.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
The Diamond Guys
August 3, 2026
Retailer 4£563 GBP
Retailer 8£617 GBP
Retailer 11£665 GBP
Retailer 2£699 GBP
Retailer 10£786 GBP
Retailer 7£805 GBP
Retailer 6£845 GBP
Retailer 9£1,016 GBP
The Diamond Guys£1,343 GBP
Retailer 1£1,709 GBP
Retailer 12£2,090 GBP
Retailer 3£2,306 GBP
Retailer 5£3,896 GBP

65 data points across 13 retailers

2 retailers£1,016 GBP to £1,343 GBP

B+
Cheapest Retailer
-
£1,016 GBP
CA$1,890 CAD
Most Expensive
B
The Diamond Guys
1954434262 · Oct 30
£1,343 GBP
$1,800 USD
View
1 more retailer has this diamond
Prices start from £1,016 GBPSave up to £328 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+
3.75ct Round
£1,016 GBP