Cushion|Lab Grown|IGI

5.51ct D VS1 Cushion Lab Grown Diamond

EX • D/VS1 • IGI LG764603054

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG764603054

Diamond specifications and retailer prices

From £1,235 GBP

$1,655 USD

As of October 31, 2026

Save £4,930 GBP (80%) vs most expensive(unlock to see where)

20 retailers carry this diamond

Most expensive: £6,165 GBP at Brilliant Earth · As of October 30, 2026

View at Brilliant Earth

About this 5.51ct lab-grown cushion diamond

This 5.51ct 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 LG764603054 or 764603054. Listed at 20 retailers as of October 30, 2026, with prices from £1,235 to £6,165, a £4,930 spread on the same certified stone. Brilliant Earth lists it at £6,165. 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

5.51

Carat

Colour

VS1

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle40.3°

Pavilion angle29.7°

OriginLab Grown

Grading LabIGI

CertificateIGI LG764603054

Dimensions8.84 × 8.84 × 6.01 mm

L/W Ratio1.00

Girdle conditionFaceted

Culet sizePointed

Cert comments

This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa

View IGI Report →View Loupe360 Video →

Top View

OriginLab Grown

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG764603054

Side View

Caratlytics Score

How it works →

Excellent

Excellent quality and great value

Unlock full score analysis

See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31

Current: £6,165 GBP|Low: £1,095 GBP|High: £9,732 GBP|Avg: £2,751 GBP|-36.6%

Brilliant Earth

Retailer 2

Retailer 3

Retailer 4

Retailer 5

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Retailer 11

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Retailer 20

October 31, 2026

Retailer 11£1,135 GBP

Retailer 13£1,235 GBP

Retailer 5£1,265 GBP

Retailer 6£1,309 GBP

Retailer 4£1,378 GBP

Retailer 14£1,600 GBP

Retailer 18£1,623 GBP

Retailer 2£1,809 GBP

Retailer 15£1,927 GBP

Retailer 20£2,298 GBP

Retailer 16£2,306 GBP

Retailer 7£2,311 GBP

Retailer 8£2,741 GBP

Retailer 19£3,120 GBP

Retailer 9£3,372 GBP

Retailer 17£3,666 GBP

Retailer 10£3,798 GBP

Retailer 12£3,985 GBP

Retailer 3£4,493 GBP

Brilliant Earth£6,165 GBP

31 data points across 20 retailers

20 retailers£1,235 GBP to £6,165 GBP

Retailer 1

£1,135 GBP

$1,521 USD

Price last confirmed 19 days ago

Retailer 2

£1,235 GBP

$1,655 USD

View

Final sale: no returns

Retailer 3

£1,265 GBP

$1,695 USD

View

Retailer 4

£1,309 GBP

HK$13,700 HKD

View

Retailer 5

£1,378 GBP

$1,847 USD

View

Retailer 6

£1,600 GBP

View

Retailer 7

£1,623 GBP

$2,175 USD

View

Retailer 8

£1,809 GBP

€2,309 EUR

View

Retailer 9

£1,927 GBP

$2,582 USD

View

Retailer 10

£2,298 GBP

A$4,737 AUD

View

Price last confirmed 10 days ago

B+

Retailer 11

£2,306 GBP

ZAR 49,911 ZAR

View

B+

Retailer 12

£2,311 GBP

$3,097 USD

View

B+

Retailer 13

£2,741 GBP

View

B+

Retailer 14

£3,120 GBP

$4,181 USD

View

B+

Retailer 15

£3,372 GBP

$4,518 USD

View

B+

Retailer 16

£3,666 GBP

View

Retailer 17

£3,798 GBP

SGD 6,877 SGD

View

Retailer 18

£3,985 GBP

$5,340 USD

View

Retailer 19

£4,493 GBP

$6,020 USD

View

Price last confirmed 10 days ago

Most Expensive

Brilliant Earth

18586634A · Oct 30

£6,165 GBP

$8,260 USD

View

19 more retailers have this diamond

Prices start from £1,235 GBPSave up to £4,930 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.

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