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Cushion|Lab Grown|IGI

1.54ct F VVS1 Cushion Lab Grown Diamond

ID • F/VVS1 • IGI LG830608389

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

Certificate IGI LG830608389

Diamond specifications and retailer prices

From £228 GBP
As of November 5, 2026
Save £1,213 GBP (84%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,441 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 F colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG830608389 or 830608389. Listed at 15 retailers as of November 4, 2026, with prices from £228 to £1,441, a £1,213 spread on the same certified stone. Brilliant Earth lists it at £1,441. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.54
Carat
F
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830608389
Dimensions6.79 × 6.57 × 4.39 mm
L/W Ratio1.03
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
6.79 mm6.57 mm1.54 ctF / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830608389
Side View
Table 63.0%Crown 36.5°Girdle: STK-THKPavilion 39.3°Culet: NoneDepth 66.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 5
Current: £1,441 GBP|Low: £224 GBP|High: £1,441 GBP|Avg: £597 GBP|+1.6%
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
Retailer 15
November 5, 2026
Retailer 2£228 GBP
Retailer 4£233 GBP
Retailer 13£353 GBP
Retailer 3£368 GBP
Retailer 12£374 GBP
Retailer 8£406 GBP
Retailer 14£473 GBP
Retailer 10£507 GBP
Retailer 11£561 GBP
Retailer 6£737 GBP
Retailer 7£855 GBP
Retailer 9£868 GBP
Retailer 15£883 GBP
Retailer 5£972 GBP
Brilliant Earth£1,441 GBP

22 data points across 15 retailers

15 retailers£228 GBP to £1,441 GBP

A
Cheapest Retailer
-
£228 GBP
A
Retailer 2
-
£233 GBP
View
Final sale: no returns
A
Retailer 3
-
£353 GBP
View
A
Retailer 4
-
£368 GBP
View
A
Retailer 5
-
£374 GBP
View
A
Retailer 6
-
£406 GBP
View
A
Retailer 7
-
£473 GBP
View
A
Retailer 8
-
£507 GBP
View
B+
Retailer 9
-
£561 GBP
View
B+
Retailer 10
-
£737 GBP
View
Retailer 11
-
£855 GBP
View
Price last confirmed 8 days ago
B+
Retailer 12
-
£868 GBP
View
B+
Retailer 13
-
£883 GBP
View
B
Retailer 14
-
£972 GBP
View
Most Expensive
B
Brilliant Earth
21141136A · Nov 4
£1,441 GBP
$1,940 USD
View
14 more retailers have this diamond
Prices start from £228 GBPSave up to £1,213 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
£228 GBP