Radiant|Lab Grown|IGI

5.08ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG780665290

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

Certificate IGI LG780665290

Diamond specifications and retailer prices

From £6,281 GBP

$8,364 USD

As of October 30, 2026

Save £14,783 GBP (70%) vs most expensive(unlock to see where)

15 retailers carry this diamond

Most expensive: £21,064 GBP at Brilliant Earth · As of October 29, 2026

View at Brilliant Earth

About this 5.08ct lab-grown radiant diamond

This 5.08ct lab-grown radiant sits in the over five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG780665290 or 780665290. Listed at 15 retailers as of October 29, 2026, with prices from £6,281 to £21,064, a £14,783 spread on the same certified stone. Brilliant Earth lists it at £21,064. 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

5.08

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle38.2°

Pavilion angle33.1°

OriginLab Grown

Grading LabIGI

CertificateIGI LG780665290

Dimensions11.92 × 8.55 × 5.71 mm

L/W Ratio1.39

Culet sizePointed

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

View IGI Report →View Loupe360 Video →

Top View

OriginLab Grown

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG780665290

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 30

Current: £21,064 GBP|Low: £6,281 GBP|High: £45,919 GBP|Avg: £13,738 GBP|-3.0%

Brilliant Earth

Retailer 2

Retailer 3

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Retailer 5

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Retailer 7

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Retailer 9

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Retailer 11

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Retailer 15

October 29, 2026

Retailer 9£6,281 GBP

Retailer 11£6,381 GBP

Retailer 6£6,515 GBP

Retailer 3£6,532 GBP

Retailer 14£7,224 GBP

Retailer 12£8,105 GBP

Retailer 10£8,431 GBP

Retailer 8£8,662 GBP

Retailer 15£9,045 GBP

Retailer 7£9,071 GBP

Retailer 5£14,154 GBP

Retailer 2£14,432 GBP

Retailer 4£20,280 GBP

Brilliant Earth£21,064 GBP

Retailer 13£39,191 GBP

38 data points across 15 retailers

15 retailers£6,281 GBP to £21,064 GBP

Cheapest Retailer

£6,281 GBP

$8,364 USD

Retailer 2

£6,381 GBP

$8,498 USD

View

Retailer 3

£6,515 GBP

$8,676 USD

View

Retailer 4

£6,532 GBP

$8,699 USD

View

Retailer 5

£7,224 GBP

$9,620 USD

View

Retailer 6

£8,105 GBP

$10,793 USD

View

Retailer 7

£8,431 GBP

$11,227 USD

View

Retailer 8

£8,662 GBP

$11,535 USD

View

Retailer 9

£9,045 GBP

$12,045 USD

View

Retailer 10

£9,071 GBP

$12,080 USD

View

Final sale: no returns

B+

Retailer 11

£14,154 GBP

€17,951 EUR

View

Price last confirmed 7 days ago

B+

Retailer 12

£14,432 GBP

View

B+

Retailer 13

£20,280 GBP

$27,006 USD

View

Most Expensive

Brilliant Earth

18494855Y · Oct 29

£21,064 GBP

$28,050 USD

View

13 more retailers have this diamond

Prices start from £6,281 GBPSave up to £14,783 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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