Radiant|Lab Grown|IGI

3.25ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG788664667

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

Certificate IGI LG788664667

Diamond specifications and retailer prices

From £1,119 GBP

$1,500 USD

As of October 30, 2026

Save £4,515 GBP (80%) vs most expensive(unlock to see where)

26 retailers carry this diamond

Most expensive: £5,635 GBP at Brilliant Earth · As of October 29, 2026

View at Brilliant Earth

About this 3.25ct lab-grown radiant diamond

This 3.25ct lab-grown radiant sits in the three to five carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG788664667 or 788664667. Listed at 26 retailers as of October 29, 2026, with prices from £1,119 to £5,635, a £4,515 spread on the same certified stone. Brilliant Earth lists it at £5,635. 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

3.25

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle46.2°

Pavilion angle37.6°

OriginLab Grown

Grading LabIGI

CertificateIGI LG788664667

Dimensions10.67 × 6.86 × 4.80 mm

L/W Ratio1.56

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 LG788664667

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: £5,635 GBP|Low: £1,119 GBP|High: £8,090 GBP|Avg: £2,722 GBP|-30.4%

Brilliant Earth

Retailer 2

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October 30, 2026

Retailer 6£1,119 GBP

Retailer 3£1,218 GBP

Retailer 12£1,253 GBP

Retailer 5£1,298 GBP

Retailer 20£1,425 GBP

Retailer 8£1,462 GBP

Retailer 14£1,500 GBP

Retailer 2£1,833 GBP

Retailer 19£1,857 GBP

Retailer 21£2,066 GBP

Retailer 16£2,091 GBP

Retailer 7£2,433 GBP

Retailer 11£2,615 GBP

Retailer 22£2,936 GBP

Retailer 13£3,015 GBP

Retailer 10£3,139 GBP

Retailer 23£3,334 GBP

Retailer 18£3,728 GBP

Retailer 24£3,821 GBP

Retailer 4£3,927 GBP

Retailer 9£3,986 GBP

Retailer 15£4,341 GBP

Retailer 17£4,565 GBP

Brilliant Earth£5,635 GBP

32 data points across 24 retailers

26 retailers£1,119 GBP to £5,635 GBP

Cheapest Retailer

£1,119 GBP

$1,500 USD

Retailer 2

£1,218 GBP

$1,632 USD

View

Retailer 3

£1,253 GBP

$1,679 USD

View

Final sale: no returns

Retailer 4

£1,298 GBP

$1,739 USD

View

Retailer 5

£1,298 GBP

$1,739 USD

View

Price last confirmed 17 days ago

Retailer 6

£1,425 GBP

$1,910 USD

View

Retailer 7

£1,462 GBP

$1,959 USD

View

Retailer 8

£1,500 GBP

HK$15,700 HKD

View

Retailer 9

£1,833 GBP

View

Retailer 10

£1,857 GBP

$2,488 USD

View

Retailer 11

£2,066 GBP

€2,637 EUR

View

Price last confirmed 7 days ago

Retailer 12

£2,091 GBP

$2,802 USD

View

Retailer 13

£2,433 GBP

$3,260 USD

View

Retailer 14

£2,615 GBP

$3,504 USD

View

Retailer 15

£2,936 GBP

A$6,053 AUD

View

Price last confirmed 8 days ago

B+

Retailer 16

£3,015 GBP

ZAR 65,254 ZAR

View

B+

Retailer 17

£3,139 GBP

View

B+

Retailer 18

£3,334 GBP

$4,467 USD

View

B+

Retailer 19

£3,499 GBP

$4,688 USD

View

B+

Retailer 20

£3,728 GBP

View

B+

Retailer 21

£3,821 GBP

$5,120 USD

View

Retailer 22

£3,927 GBP

A$8,096 AUD

View

Price last confirmed 21 days ago

B+

Retailer 23

£3,986 GBP

$5,341 USD

View

B+

Retailer 24

£4,341 GBP

SGD 7,860 SGD

View

Retailer 25

£4,565 GBP

$6,117 USD

View

Most Expensive

Brilliant Earth

18549401A · Oct 29

£5,635 GBP

$7,550 USD

View

25 more retailers have this diamond

Prices start from £1,119 GBPSave up to £4,515 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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