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Cushion|Lab Grown|IGI

1.53ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG837677857

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG837677857

Diamond specifications and retailer prices

From £310 GBP
As of November 4, 2026
Save £1,830 GBP (86%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £2,141 GBP at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.53ct lab-grown cushion diamond

This 1.53ct 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 LG837677857 or 837677857. Listed at 18 retailers as of November 4, 2026, with prices from £310 to £2,141, a £1,830 spread on the same certified stone. Brilliant Earth lists it at £2,141. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.53
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle31.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG837677857
Dimensions7.98 × 5.84 × 3.83 mm
L/W Ratio1.37
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
7.98 mm5.84 mm1.53 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG837677857
Side View
Table 60.0%Crown 34°Girdle: MED-THKPavilion 31.5°Culet: NoneDepth 65.6%

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: £2,141 GBP|Low: £310 GBP|High: £2,533 GBP|Avg: £967 GBP|-15.5%
Brilliant Earth
Retailer 2
Retailer 3
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Retailer 7
Retailer 8
Retailer 9
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Retailer 11
Retailer 12
Retailer 13
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Retailer 17
November 5, 2026
Retailer 7£310 GBP
Retailer 12£363 GBP
Retailer 17£456 GBP
Retailer 16£544 GBP
Retailer 3£547 GBP
Retailer 15£593 GBP
Retailer 2£612 GBP
Retailer 8£784 GBP
Retailer 11£802 GBP
Retailer 14£869 GBP
Retailer 9£1,135 GBP
Retailer 13£1,200 GBP
Retailer 4£1,292 GBP
Retailer 6£1,296 GBP
Retailer 10£1,341 GBP
Retailer 5£1,948 GBP
Brilliant Earth£2,141 GBP

34 data points across 17 retailers

18 retailers£310 GBP to £2,141 GBP

A
Cheapest Retailer
-
£310 GBP
Final sale: no returns
A
Retailer 2
-
£363 GBP
View
A
Retailer 3
-
£456 GBP
View
A
Retailer 4
-
£544 GBP
View
A
Retailer 5
-
£547 GBP
View
A
Retailer 6
-
£593 GBP
View
A
Retailer 7
-
£612 GBP
View
A
Retailer 8
-
£784 GBP
View
A
Retailer 9
-
£802 GBP
View
A
Retailer 10
-
£869 GBP
View
B+
Retailer 11
-
£1,135 GBP
View
B+
Retailer 12
-
£1,200 GBP
View
B+
Retailer 13
-
£1,292 GBP
View
B+
Retailer 14
-
£1,296 GBP
View
B+
Retailer 15
-
£1,341 GBP
View
Retailer 16
-
£1,816 GBP
View
Price last confirmed 40 days ago
Retailer 17
-
£1,948 GBP
View
Price last confirmed 17 days ago
Most Expensive
B
Brilliant Earth
22183646A · Nov 4
£2,141 GBP
$2,890 USD
View
17 more retailers have this diamond
Prices start from £310 GBPSave up to £1,830 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
1.53ct Cushion
£310 GBP