Cushion|Lab Grown|IGI

5.40ct D VS1 Cushion Lab Grown Diamond

EX • D/VS1 • IGI LG829612081

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG829612081

Diamond specifications and retailer prices

From £905 GBP
$1,212 USD
As of October 31, 2026
Save £317 GBP (26%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £2,552 GBP at Brilliance · As of October 21, 2026
View at Brilliance

About this 5.4ct lab-grown cushion diamond

This 5.4ct lab-grown cushion sits in the over five carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG829612081 or 829612081. Listed at 3 retailers as of October 30, 2026, with a 35% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

5.40
Carat
D
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle35.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG829612081
Dimensions11.90 × 9.15 × 6.21 mm
L/W Ratio1.30
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.90 mm9.15 mm5.40 ctD / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG829612081
Side View
Table 59.0%Crown 34.5°Girdle: MED-STKPavilion 35.2°Culet: NoneDepth 67.9%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 31
Current: £2,552 GBP|Low: £898 GBP|High: £2,849 GBP|Avg: £1,745 GBP|-10.5%
Brilliance
Retailer 2
Retailer 3
October 27, 2026
Retailer 2£905 GBP
Retailer 3£1,222 GBP
Brilliance£2,552 GBP

11 data points across 3 retailers

3 retailers£905 GBP to £1,222 GBP

A
Cheapest Retailer
-
£905 GBP
$1,212 USD
Final sale: no returns
A
Retailer 2
-
£1,222 GBP
$1,637 USD
View
Most Expensive
Brilliance
D45324216 · Oct 21
£2,552 GBP
$3,419 USD
View
Price last confirmed 10 days ago
2 more retailers have this diamond
Prices start from £905 GBPSave up to £317 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
5.40ct Cushion
£905 GBP