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Oval|Lab Grown|IGI

3.74ct E SI2 Oval Lab Grown Diamond

ID • E/SI2 • IGI LG643423457

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG643423457

Diamond specifications and retailer prices

From £426 GBP
$567 USD
As of October 28, 2026
Save £2,983 GBP (88%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £3,409 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 3.74ct lab-grown oval diamond

This 3.74ct lab-grown oval sits in the three to five carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG643423457 or 643423457. Listed at 13 retailers as of October 28, 2026, with prices from £426 to £3,409, a £2,983 spread on the same certified stone. Brilliant Earth lists it at £3,409. 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

3.74
Carat
E
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG643423457
Dimensions12.89 × 8.64 × 5.42 mm
L/W Ratio1.49
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.89 mm8.64 mm3.74 ctE / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG643423457
Side View
Table 60.0%Crown 35.6°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 62.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: £3,702 GBP|Low: £380 GBP|High: £3,848 GBP|Avg: £1,470 GBP
Brilliant Earth
Retailer 2
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Retailer 11
Retailer 12
Retailer 13
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Retailer 18
October 29, 2026
Retailer 15£426 GBP
Retailer 6£472 GBP
Retailer 2£548 GBP
Retailer 9£692 GBP
Retailer 17£698 GBP
Retailer 13£699 GBP
Retailer 16£761 GBP
Retailer 11£811 GBP
Retailer 7£907 GBP
Retailer 3£1,217 GBP
Retailer 4£1,345 GBP
Retailer 5£1,368 GBP
Retailer 8£1,609 GBP
Retailer 14£1,937 GBP
Retailer 18£2,247 GBP
Retailer 12£2,271 GBP
Brilliant Earth£3,702 GBP
Retailer 10£3,848 GBP

9 data points across 18 retailers

13 retailers£426 GBP to £3,409 GBP

A
Cheapest Retailer
-
£426 GBP
$567 USD
A
Retailer 2
-
£472 GBP
$628 USD
View
A
Retailer 3
-
£548 GBP
$730 USD
View
B+
Retailer 4
-
£698 GBP
$930 USD
View
A
Retailer 5
-
£699 GBP
View
A
Retailer 6
-
£761 GBP
$1,014 USD
View
A
Retailer 7
-
£811 GBP
View
B+
Retailer 8
-
£1,217 GBP
$1,620 USD
View
B+
Retailer 9
-
£1,345 GBP
$1,792 USD
View
B+
Retailer 10
-
£1,368 GBP
$1,822 USD
View
B
Retailer 11
-
£2,247 GBP
$2,992 USD
View
B
Retailer 12
-
£2,271 GBP
View
Most Expensive
B
Brilliant Earth
22300949A · Oct 29
£3,409 GBP
$4,540 USD
View
12 more retailers have this diamond
Prices start from £426 GBPSave up to £2,983 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.

A
3.74ct Oval
£426 GBP