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Cushion|Lab Grown|IGI

1.54ct F VS1 Cushion Lab Grown Diamond

ID • F/VS1 • IGI LG830608395

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

Certificate IGI LG830608395

Diamond specifications and retailer prices

From £220 GBP
As of November 4, 2026
Save £1,177 GBP (84%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £1,397 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 VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG830608395 or 830608395. Listed at 16 retailers as of November 4, 2026, with prices from £220 to £1,397, a £1,177 spread on the same certified stone. Brilliant Earth lists it at £1,397. 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
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830608395
Dimensions6.66 × 6.63 × 4.50 mm
L/W Ratio1.00
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
6.66 mm6.63 mm1.54 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830608395
Side View
Table 63.0%Crown 33.9°Girdle: MED-STKPavilion 41°Culet: NoneDepth 67.9%

Caratlytics Score

How it works →
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: £1,397 GBP|Low: £202 GBP|High: £1,397 GBP|Avg: £552 GBP
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
Retailer 16
November 5, 2026
Retailer 3£220 GBP
Retailer 2£239 GBP
Retailer 15£337 GBP
Retailer 4£351 GBP
Retailer 12£356 GBP
Retailer 9£380 GBP
Retailer 16£394 GBP
Retailer 10£481 GBP
Retailer 11£554 GBP
Retailer 8£675 GBP
Retailer 7£702 GBP
Retailer 13£754 GBP
Retailer 14£826 GBP
Retailer 5£840 GBP
Retailer 6£944 GBP
Brilliant Earth£1,397 GBP

22 data points across 16 retailers

16 retailers£220 GBP to £1,397 GBP

A
Cheapest Retailer
-
£220 GBP
Final sale: no returns
A
Retailer 2
-
£239 GBP
View
A
Retailer 3
-
£337 GBP
View
A
Retailer 4
-
£351 GBP
View
A
Retailer 5
-
£356 GBP
View
A
Retailer 6
-
£380 GBP
View
A
Retailer 7
-
£394 GBP
View
A
Retailer 8
-
£481 GBP
View
B+
Retailer 9
-
£554 GBP
View
Retailer 10
-
£675 GBP
View
Price last confirmed 8 days ago
B+
Retailer 11
-
£702 GBP
View
B+
Retailer 12
-
£754 GBP
View
B
Retailer 13
-
£826 GBP
View
B
Retailer 14
-
£840 GBP
View
B
Retailer 15
-
£944 GBP
View
Most Expensive
B
Brilliant Earth
21141146A · Nov 4
£1,397 GBP
$1,880 USD
View
15 more retailers have this diamond
Prices start from £220 GBPSave up to £1,177 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
£220 GBP