Radiant|Lab Grown|IGI

5.51ct D VS1 Radiant Lab Grown Diamond

ID • D/VS1 • IGI LG787645258

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG787645258

Diamond specifications and retailer prices

From £919 GBP

$1,232 USD

As of October 29, 2026

Save £6,671 GBP (88%) vs most expensive(unlock to see where)

26 retailers carry this diamond

Most expensive: £7,590 GBP at Brilliant Earth · As of October 29, 2026

View at Brilliant Earth

About this 5.51ct lab-grown radiant diamond

This 5.51ct lab-grown radiant 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 LG787645258 or 787645258. Listed at 26 retailers as of October 29, 2026, with prices from £919 to £7,590, a £6,671 spread on the same certified stone. Brilliant Earth lists it at £7,590. 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

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle42.8°

Pavilion angle32.4°

OriginLab Grown

Grading LabIGI

CertificateIGI LG787645258

Dimensions12.49 × 8.85 × 5.66 mm

L/W Ratio1.41

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

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG787645258

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 29

Current: £7,590 GBP|Low: £919 GBP|High: £8,665 GBP|Avg: £2,398 GBP|-12.4%

Brilliant Earth

Retailer 2

Retailer 3

Retailer 4

Retailer 5

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Retailer 11

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Retailer 15

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Retailer 19

October 31, 2026

Retailer 17£919 GBP

Retailer 5£953 GBP

Retailer 11£989 GBP

Retailer 12£1,037 GBP

Retailer 4£1,218 GBP

Retailer 14£1,364 GBP

Retailer 2£1,370 GBP

Retailer 15£1,588 GBP

Retailer 16£1,930 GBP

Retailer 3£1,933 GBP

Retailer 13£1,936 GBP

Retailer 6£2,259 GBP

Retailer 7£2,627 GBP

Retailer 9£2,895 GBP

Retailer 18£3,079 GBP

Retailer 8£3,126 GBP

Retailer 10£3,332 GBP

Retailer 19£4,146 GBP

Brilliant Earth£7,590 GBP

38 data points across 19 retailers

26 retailers£919 GBP to £7,590 GBP

Retailer 1

£822 GBP

$1,101 USD

Price last confirmed 11 days ago

Retailer 2

£852 GBP

$1,142 USD

View

Price last confirmed 31 days ago

Retailer 3

£919 GBP

$1,232 USD

View

Final sale: no returns

Retailer 4

£928 GBP

$1,243 USD

View

Price last confirmed 33 days ago

Retailer 5

£953 GBP

$1,277 USD

View

Price last confirmed 13 days ago

Retailer 6

£953 GBP

$1,277 USD

View

Price last confirmed 11 days ago

Retailer 7

£975 GBP

$1,307 USD

View

Price last confirmed 33 days ago

Retailer 8

£1,037 GBP

$1,390 USD

View

Retailer 9

£1,218 GBP

$1,632 USD

View

Retailer 10

£1,364 GBP

$1,828 USD

View

Retailer 11

£1,370 GBP

View

Retailer 12

£1,588 GBP

€2,027 EUR

View

Price last confirmed 7 days ago

Retailer 13

£1,854 GBP

$2,484 USD

View

Price last confirmed 30 days ago

Retailer 14

£1,930 GBP

A$3,978 AUD

View

Price last confirmed 9 days ago

B+

Retailer 15

£1,933 GBP

$2,590 USD

View

B+

Retailer 16

£1,936 GBP

ZAR 41,913 ZAR

View

B+

Retailer 17

£2,259 GBP

$3,027 USD

View

B+

Retailer 18

£2,627 GBP

View

B+

Retailer 19

£2,759 GBP

$3,697 USD

View

Retailer 20

£2,895 GBP

$3,879 USD

View

B+

Retailer 21

£3,079 GBP

View

Retailer 22

£3,126 GBP

$4,189 USD

View

Retailer 23

£3,332 GBP

$4,464 USD

View

Retailer 24

£4,146 GBP

$5,555 USD

View

Price last confirmed 12 days ago

Retailer 25

£6,995 GBP

View

Price last confirmed 21 days ago

Most Expensive

Brilliant Earth

18736050A · Oct 29

£7,590 GBP

$10,170 USD

View

25 more retailers have this diamond

Prices start from £919 GBPSave up to £6,671 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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