Oval|Lab Grown|IGI

4.21ct E FL Oval Lab Grown Diamond

EX • E/FL • IGI LG790622868

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG790622868

Diamond specifications and retailer prices

From £3,535 GBP

$4,736 USD

As of October 29, 2026

Save £17,100 GBP (83%) vs most expensive(unlock to see where)

26 retailers carry this diamond

Most expensive: £20,635 GBP at With Clarity · As of October 30, 2026

View at With Clarity

About this 4.21ct lab-grown oval diamond

This 4.21ct lab-grown oval sits in the three to five carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG790622868 or 790622868. Listed at 26 retailers as of October 29, 2026, with prices from £3,535 to £20,635, a £17,100 spread on the same certified stone. With Clarity lists it at £20,635. 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

4.21

Carat

Colour

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle34.9°

Pavilion angle40.6°

OriginLab Grown

Grading LabIGI

CertificateIGI LG790622868

Dimensions13.55 × 9.06 × 5.58 mm

L/W Ratio1.50

Girdle conditionFaceted

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 LG790622868

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: £5,334 GBP|Low: £3,049 GBP|High: £12,367 GBP|Avg: £6,148 GBP|+0.5%

Retailer 1

Retailer 2

Retailer 3

Retailer 4

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Retailer 20

October 30, 2026

Retailer 19£3,535 GBP

Retailer 6£3,704 GBP

Retailer 14£3,958 GBP

Retailer 4£4,100 GBP

Retailer 8£4,100 GBP

Retailer 18£4,123 GBP

Retailer 7£4,218 GBP

Retailer 17£4,253 GBP

Retailer 11£5,021 GBP

Retailer 5£5,124 GBP

Retailer 1£5,334 GBP

Retailer 9£5,789 GBP

Retailer 16£6,355 GBP

Retailer 13£6,538 GBP

Retailer 2£6,887 GBP

Retailer 15£8,535 GBP

Retailer 12£8,726 GBP

Retailer 20£9,169 GBP

Retailer 10£10,479 GBP

Retailer 3£12,367 GBP

42 data points across 20 retailers

26 retailers£3,535 GBP to £20,635 GBP

Cheapest Retailer

£3,535 GBP

$4,736 USD

Retailer 2

£3,535 GBP

$4,736 USD

View

Price last confirmed 37 days ago

Retailer 3

£3,704 GBP

$4,963 USD

View

Retailer 4

£3,839 GBP

CA$7,144 CAD

View

Retailer 5

£3,958 GBP

$5,303 USD

View

Final sale: no returns

Retailer 6

£4,044 GBP

$5,418 USD

View

Price last confirmed 38 days ago

Retailer 7

£4,100 GBP

$5,494 USD

View

Retailer 8

£4,100 GBP

$5,494 USD

View

Price last confirmed 14 days ago

Retailer 9

£4,123 GBP

$5,525 USD

View

Retailer 10

£4,218 GBP

$5,652 USD

View

Retailer 11

£4,253 GBP

$5,699 USD

View

B+

Retailer 12

£5,021 GBP

$6,727 USD

View

B+

Retailer 13

£5,124 GBP

$6,865 USD

View

B+

Retailer 14

£5,334 GBP

View

B+

Retailer 15

£5,789 GBP

View

B+

Retailer 16

£6,887 GBP

$9,228 USD

View

B+

Retailer 17

£8,535 GBP

View

B+

Retailer 18

£8,726 GBP

ZAR 188,890 ZAR

View

Retailer 19

£9,169 GBP

$12,286 USD

View

Retailer 20

£10,479 GBP

$14,041 USD

View

Retailer 21

£10,959 GBP

$14,684 USD

View

Retailer 22

£11,397 GBP

$15,270 USD

View

Retailer 23

£11,751 GBP

$15,745 USD

View

Retailer 24

£12,367 GBP

$16,570 USD

View

Retailer 25

£14,682 GBP

$19,672 USD

View

Most Expensive

With Clarity

790622868 · Oct 30

£20,635 GBP

$27,648 USD

View

25 more retailers have this diamond

Prices start from £3,535 GBPSave up to £17,100 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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4.21ct Oval

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