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Oval|Lab Grown|IGI

1.50ct F FL Oval Lab Grown Diamond

ID • F/FL • IGI LG818654386

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG818654386

Diamond specifications and retailer prices

From £303 GBP
As of November 4, 2026
Save £1,519 GBP (83%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £1,822 GBP at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.5ct lab-grown oval diamond

This 1.5ct lab-grown oval sits in the one-and-a-half to two carat band, graded F colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818654386 or 818654386. Listed at 13 retailers as of November 4, 2026, with prices from £303 to £1,822, a £1,519 spread on the same certified stone. Brilliant Earth lists it at £1,822. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.50
Carat
F
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818654386
Dimensions9.22 × 6.54 × 3.99 mm
L/W Ratio1.41
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
9.22 mm6.54 mm1.50 ctF / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818654386
Side View
Table 62.0%Crown 33.3°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.0%

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 4
Current: £1,822 GBP|Low: £303 GBP|High: £3,000 GBP|Avg: £1,133 GBP|-39.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 5, 2026
Retailer 4£303 GBP
Retailer 13£370 GBP
Retailer 8£431 GBP
Retailer 10£455 GBP
Retailer 2£458 GBP
Retailer 9£587 GBP
Retailer 11£732 GBP
Retailer 5£774 GBP
Retailer 12£878 GBP
Retailer 7£1,049 GBP
Retailer 3£1,156 GBP
Retailer 6£1,459 GBP
Brilliant Earth£1,822 GBP

44 data points across 13 retailers

13 retailers£303 GBP to £1,822 GBP

A
Cheapest Retailer
-
£303 GBP
A
Retailer 2
-
£370 GBP
View
A
Retailer 3
-
£431 GBP
View
A
Retailer 4
-
£455 GBP
View
A
Retailer 5
-
£458 GBP
View
A
Retailer 6
-
£587 GBP
View
B+
Retailer 7
-
£732 GBP
View
B+
Retailer 8
-
£774 GBP
View
B+
Retailer 9
-
£878 GBP
View
B+
Retailer 10
-
£1,049 GBP
View
B+
Retailer 11
-
£1,156 GBP
View
B+
Retailer 12
-
£1,459 GBP
View
Most Expensive
B
Brilliant Earth
21143429A · Nov 4
£1,822 GBP
$2,460 USD
View
12 more retailers have this diamond
Prices start from £303 GBPSave up to £1,519 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
1.50ct Oval
£303 GBP