Cushion|Lab Grown|IGI

5.51ct D VS1 Cushion Lab Grown Diamond

EX • D/VS1 • IGI LG632406758

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG632406758

Diamond specifications and retailer prices

From £2,058 GBP

$2,757 USD

As of October 31, 2026

Save £8,318 GBP (80%) vs most expensive(unlock to see where)

18 retailers carry this diamond

Most expensive: £10,376 GBP at Taylor and Hart · As of October 31, 2026

View at Taylor and Hart

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 LG632406758 or 632406758. Listed at 18 retailers as of October 31, 2026, with prices from £2,058 to £10,376, a £8,318 spread on the same certified stone. Taylor and Hart lists it at £10,376. 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 angle38.9°

Pavilion angle36.1°

OriginLab Grown

Grading LabIGI

CertificateIGI LG632406758

Dimensions9.71 × 9.71 × 6.50 mm

L/W Ratio1.00

Girdle conditionFaceted

Culet sizePointed

Cert comments

This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa

View IGI Report →View Loupe360 Video →

Top View

OriginLab Grown

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG632406758

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: £4,680 GBP|Low: £2,582 GBP|High: £15,874 GBP|Avg: £5,426 GBP|+0.3%

Retailer 1

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

Retailer 12

Retailer 13

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Retailer 15

Retailer 16

October 31, 2026

Retailer 7£2,582 GBP

Retailer 2£2,584 GBP

Retailer 15£2,676 GBP

Retailer 16£2,795 GBP

Retailer 13£3,216 GBP

Retailer 6£3,782 GBP

Retailer 9£3,911 GBP

Retailer 8£4,516 GBP

Retailer 1£4,680 GBP

Retailer 10£6,001 GBP

Retailer 12£6,038 GBP

Retailer 4£6,708 GBP

Retailer 3£7,369 GBP

Retailer 11£7,498 GBP

Retailer 5£9,643 GBP

Retailer 14£15,874 GBP

42 data points across 16 retailers

18 retailers£2,058 GBP to £10,376 GBP

Cheapest Retailer

£2,058 GBP

$2,757 USD

B+

Retailer 2

£2,582 GBP

$3,459 USD

View

B+

Retailer 3

£2,584 GBP

$3,462 USD

View

Final sale: no returns

Retailer 4

£2,676 GBP

$3,586 USD

View

Price last confirmed 19 days ago

B+

Retailer 5

£2,795 GBP

$3,745 USD

View

Retailer 6

£3,216 GBP

View

Price last confirmed 15 days ago

Retailer 7

£3,782 GBP

$5,068 USD

View

B+

Retailer 8

£3,911 GBP

View

Retailer 9

£4,516 GBP

View

Retailer 10

£4,680 GBP

A$9,647 AUD

View

Retailer 11

£6,001 GBP

ZAR 129,908 ZAR

View

Retailer 12

£6,038 GBP

A$12,447 AUD

View

Price last confirmed 9 days ago

Retailer 13

£6,708 GBP

$8,988 USD

View

Retailer 14

£7,369 GBP

$9,873 USD

View

Retailer 15

£7,498 GBP

View

Retailer 16

£9,643 GBP

$12,920 USD

View

Most Expensive

Taylor and Hart

0WHYVRQ · Oct 31

£10,376 GBP

$13,903 USD

View

16 more retailers have this diamond

Prices start from £2,058 GBPSave up to £8,318 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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5.51ct Cushion

£2,058 GBP