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Cushion|Lab Grown|IGI

1.54ct D IF Cushion Lab Grown Diamond

EX • D/IF • IGI LG761510837

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG761510837

Diamond specifications and retailer prices

From £409 GBP
As of November 4, 2026
Save £2,176 GBP (84%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £2,585 GBP at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.54ct lab-grown cushion diamond

This 1.54ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG761510837 or 761510837. Listed at 21 retailers as of November 4, 2026, with prices from £409 to £2,585, a £2,176 spread on the same certified stone. Brilliant Earth lists it at £2,585. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.54
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle36.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG761510837
Dimensions6.59 × 6.47 × 4.31 mm
L/W Ratio1.02
Girdle conditionFaceted
Culet sizePointed
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
6.59 mm6.47 mm1.54 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG761510837
Side View
Table 60.0%Crown 35.9°Girdle: Slightly ThickPavilion 36.2°Culet: NoneDepth 66.6%

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: Nov 4
Current: £2,585 GBP|Low: £453 GBP|High: £3,007 GBP|Avg: £1,246 GBP|-14.0%
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
Retailer 14
November 5, 2026
Retailer 4£453 GBP
Retailer 13£544 GBP
Retailer 6£626 GBP
Retailer 7£678 GBP
Retailer 2£745 GBP
Retailer 9£781 GBP
Retailer 12£1,054 GBP
Retailer 8£1,067 GBP
Retailer 5£1,434 GBP
Retailer 3£1,579 GBP
Retailer 11£1,832 GBP
Retailer 10£1,890 GBP
Retailer 14£1,956 GBP
Brilliant Earth£2,585 GBP

44 data points across 14 retailers

21 retailers£409 GBP to £2,585 GBP

A
Cheapest Retailer
-
£409 GBP
Final sale: no returns
Retailer 2
-
£453 GBP
View
Price last confirmed 20 days ago
A
Retailer 3
-
£544 GBP
View
A
Retailer 4
-
£607 GBP
View
A
Retailer 5
-
£626 GBP
View
A
Retailer 6
-
£678 GBP
View
A
Retailer 7
-
£745 GBP
View
A
Retailer 8
-
£781 GBP
View
A
Retailer 9
-
£823 GBP
View
A
Retailer 10
-
£1,054 GBP
View
B+
Retailer 11
-
£1,067 GBP
View
B+
Retailer 12
-
£1,321 GBP
View
B+
Retailer 13
-
£1,434 GBP
View
B+
Retailer 14
-
£1,475 GBP
View
B+
Retailer 15
-
£1,576 GBP
View
B+
Retailer 16
-
£1,579 GBP
View
B+
Retailer 17
-
£1,693 GBP
View
B+
Retailer 18
-
£1,832 GBP
View
B+
Retailer 19
-
£1,890 GBP
View
Retailer 20
-
£1,956 GBP
View
Price last confirmed 17 days ago
Most Expensive
B
Brilliant Earth
17663504A · Nov 4
£2,585 GBP
$3,490 USD
View
20 more retailers have this diamond
Prices start from £409 GBPSave up to £2,176 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
1.54ct Cushion
£409 GBP