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Oval|Lab Grown|IGI

1.40ct G IF Oval Lab Grown Diamond

EX • G/IF • IGI LG639489807

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG639489807

Diamond specifications and retailer prices

From £233 GBP
As of November 3, 2026
Save £967 GBP (81%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £1,844 GBP at Brilliant Earth · As of October 16, 2026
View at Brilliant Earth

About this 1.4ct lab-grown oval diamond

This 1.4ct lab-grown oval sits in the one-and-a-quarter to one-and-a-half carat band, graded G colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG639489807 or 639489807. Listed at 23 retailers as of November 3, 2026, with a 416% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.40
Carat
G
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG639489807
Dimensions9.08 × 6.49 × 3.86 mm
L/W Ratio1.40
Girdle conditionFaceted
Culet sizeNone
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.08 mm6.49 mm1.40 ctG / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG639489807
Side View
Table 61.0%Crown 34.2°Girdle: THN-MEDPavilion 40.2°Culet: NoneDepth 59.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 3
Current: £1,200 GBP|Low: £224 GBP|High: £1,844 GBP|Avg: £649 GBP|-34.9%
Brilliant Earth
Retailer 2
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Retailer 20
November 5, 2026
Retailer 7£233 GBP
Retailer 16£261 GBP
Retailer 5£270 GBP
Retailer 20£288 GBP
Retailer 14£320 GBP
Retailer 9£387 GBP
Retailer 10£404 GBP
Retailer 8£476 GBP
Retailer 3£493 GBP
Retailer 19£497 GBP
Retailer 2£508 GBP
Retailer 17£708 GBP
Retailer 11£724 GBP
Retailer 18£846 GBP
Retailer 4£927 GBP
Retailer 12£961 GBP
Retailer 15£970 GBP
Retailer 6£1,033 GBP
Retailer 13£1,152 GBP
Brilliant Earth£1,200 GBP

31 data points across 20 retailers

23 retailers£233 GBP to £1,200 GBP

A
Cheapest Retailer
-
£233 GBP
A
Retailer 2
-
£261 GBP
View
Final sale: no returns
A
Retailer 3
-
£270 GBP
View
Retailer 4
-
£278 GBP
View
Price last confirmed 11 days ago
A
Retailer 5
-
£288 GBP
View
A
Retailer 6
-
£320 GBP
View
A
Retailer 7
-
£387 GBP
View
A
Retailer 8
-
£404 GBP
View
A
Retailer 9
-
£476 GBP
View
A
Retailer 10
-
£493 GBP
View
A
Retailer 11
-
£497 GBP
View
A
Retailer 12
-
£508 GBP
View
B+
Retailer 13
-
£708 GBP
View
B+
Retailer 14
-
£716 GBP
View
B+
Retailer 15
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£724 GBP
View
B+
Retailer 16
-
£846 GBP
View
B+
Retailer 17
-
£927 GBP
View
B+
Retailer 18
-
£961 GBP
View
B+
Retailer 19
-
£970 GBP
View
B+
Retailer 20
-
£1,033 GBP
View
B
Retailer 21
-
£1,152 GBP
View
B
Retailer 22
-
£1,200 GBP
View
Most Expensive
Brilliant Earth
14225550A · Oct 16
£1,844 GBP
$2,490 USD
View
Price last confirmed 19 days ago
22 more retailers have this diamond
Prices start from £233 GBPSave up to £967 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
1.40ct Oval
£233 GBP