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Cushion|Lab Grown|IGI

1.54ct D IF Cushion Lab Grown Diamond

EX • D/IF • IGI LG744521936

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

Certificate IGI LG744521936

Diamond specifications and retailer prices

From £312 GBP
As of November 4, 2026
Save £1,844 GBP (86%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £2,156 GBP at Brilliant Earth · As of November 3, 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 LG744521936 or 744521936. Listed at 21 retailers as of November 3, 2026, with prices from £312 to £2,156, a £1,844 spread on the same certified stone. Brilliant Earth lists it at £2,156. 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 angle36.2°
Pavilion angle35°
OriginLab Grown
Grading LabIGI
CertificateIGI LG744521936
Dimensions6.39 × 6.39 × 4.27 mm
L/W Ratio1.00
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
6.39 mm6.39 mm1.54 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG744521936
Side View
Table 60.0%Crown 36.2°Girdle: MED-STKPavilion 35°Culet: NoneDepth 66.8%

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: £2,156 GBP|Low: £312 GBP|High: £3,096 GBP|Avg: £1,129 GBP|-28.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
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Retailer 11
Retailer 12
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Retailer 19
November 5, 2026
Retailer 11£312 GBP
Retailer 3£346 GBP
Retailer 18£411 GBP
Retailer 5£529 GBP
Retailer 6£553 GBP
Retailer 16£555 GBP
Retailer 15£597 GBP
Retailer 2£616 GBP
Retailer 4£794 GBP
Retailer 13£807 GBP
Retailer 14£875 GBP
Retailer 10£1,141 GBP
Retailer 8£1,296 GBP
Retailer 7£1,302 GBP
Retailer 9£1,343 GBP
Retailer 12£1,349 GBP
Retailer 17£1,832 GBP
Retailer 19£1,963 GBP
Brilliant Earth£2,156 GBP

39 data points across 19 retailers

21 retailers£312 GBP to £2,156 GBP

A
Cheapest Retailer
-
£312 GBP
Final sale: no returns
Retailer 2
-
£346 GBP
View
Price last confirmed 11 days ago
A
Retailer 3
-
£411 GBP
View
A
Retailer 4
-
£529 GBP
View
A
Retailer 5
-
£553 GBP
View
A
Retailer 6
-
£555 GBP
View
A
Retailer 7
-
£597 GBP
View
A
Retailer 8
-
£616 GBP
View
A
Retailer 9
-
£794 GBP
View
A
Retailer 10
-
£807 GBP
View
A
Retailer 11
-
£875 GBP
View
B+
Retailer 12
-
£1,141 GBP
View
B+
Retailer 13
-
£1,208 GBP
View
B+
Retailer 14
-
£1,296 GBP
View
B+
Retailer 15
-
£1,302 GBP
View
B+
Retailer 16
-
£1,343 GBP
View
B+
Retailer 17
-
£1,349 GBP
View
B+
Retailer 18
-
£1,434 GBP
View
B
Retailer 19
-
£1,832 GBP
View
Retailer 20
-
£1,963 GBP
View
Price last confirmed 17 days ago
Most Expensive
B
Brilliant Earth
17569913A · Nov 3
£2,156 GBP
$2,910 USD
View
20 more retailers have this diamond
Prices start from £312 GBPSave up to £1,844 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
£312 GBP