Round|Lab Grown|IGI

4.29ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG754595507

Shape and cutting style on the report: Round brilliant

Certificate IGI LG754595507

Diamond specifications and retailer prices

From £2,092 GBP

$2,786 USD

As of October 29, 2026

Save £8,684 GBP (81%) vs most expensive(unlock to see where)

27 retailers carry this diamond

Most expensive: £10,776 GBP at Brilliant Earth · As of October 30, 2026

View at Brilliant Earth

About this 4.29ct lab-grown round diamond

This 4.29ct lab-grown round sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG754595507 or 754595507. Listed at 27 retailers as of October 29, 2026, with prices from £2,092 to £10,776, a £8,684 spread on the same certified stone. Brilliant Earth lists it at £10,776. 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

4.29

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle34°

Pavilion angle40.7°

OriginLab Grown

Grading LabIGI

CertificateIGI LG754595507

Dimensions10.45 × 10.51 × 6.41 mm

L/W Ratio1.01

Girdle conditionFaceted

Culet sizePointed

Cert comments

HEARTS & ARROWS 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 LG754595507

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: £10,776 GBP|Low: £2,092 GBP|High: £18,758 GBP|Avg: £5,466 GBP|-42.6%

Brilliant Earth

Retailer 2

Retailer 3

Retailer 4

Retailer 5

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Retailer 7

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Retailer 9

Retailer 10

Retailer 11

Retailer 12

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Retailer 19

October 30, 2026

Retailer 13£2,092 GBP

Retailer 7£2,265 GBP

Retailer 8£2,643 GBP

Retailer 2£2,914 GBP

Retailer 18£3,098 GBP

Retailer 17£3,249 GBP

Retailer 3£3,259 GBP

Retailer 15£3,457 GBP

Retailer 4£3,788 GBP

Retailer 12£4,613 GBP

Retailer 16£4,651 GBP

Retailer 6£5,787 GBP

Retailer 14£5,834 GBP

Retailer 5£6,082 GBP

Retailer 11£7,563 GBP

Retailer 9£7,643 GBP

Retailer 10£8,373 GBP

Retailer 19£8,489 GBP

Brilliant Earth£10,776 GBP

35 data points across 19 retailers

27 retailers£2,092 GBP to £10,776 GBP

Retailer 1

£2,033 GBP

$2,707 USD

Price last confirmed 24 days ago

Retailer 2

£2,033 GBP

$2,707 USD

View

Price last confirmed 17 days ago

Retailer 3

£2,091 GBP

$2,784 USD

View

Price last confirmed 31 days ago

Retailer 4

£2,092 GBP

$2,786 USD

View

Final sale: no returns

Retailer 5

£2,167 GBP

$2,886 USD

View

Retailer 6

£2,167 GBP

$2,886 USD

View

Price last confirmed 27 days ago

Retailer 7

£2,265 GBP

$3,016 USD

View

Retailer 8

£2,392 GBP

$3,185 USD

View

Price last confirmed 30 days ago

Retailer 9

£2,523 GBP

$3,360 USD

View

Price last confirmed 36 days ago

Retailer 10

£2,643 GBP

HK$27,500 HKD

View

Retailer 11

£2,914 GBP

View

Retailer 12

£3,098 GBP

$4,125 USD

View

Retailer 13

£3,249 GBP

$4,327 USD

View

Retailer 14

£3,259 GBP

$4,340 USD

View

Retailer 15

£3,333 GBP

$4,439 USD

View

Price last confirmed 29 days ago

Retailer 16

£3,457 GBP

€4,385 EUR

View

Retailer 17

£3,788 GBP

$5,044 USD

View

Retailer 18

£4,613 GBP

ZAR 99,250 ZAR

View

Retailer 19

£4,651 GBP

A$9,528 AUD

View

Price last confirmed 7 days ago

B+

Retailer 20

£5,787 GBP

$7,707 USD

View

B+

Retailer 21

£5,834 GBP

View

B+

Retailer 22

£6,082 GBP

$8,100 USD

View

B+

Retailer 23

£7,563 GBP

$10,071 USD

View

B+

Retailer 24

£7,643 GBP

SGD 13,755 SGD

View

Retailer 25

£8,373 GBP

$11,150 USD

View

Retailer 26

£8,489 GBP

A$17,391 AUD

View

Price last confirmed 21 days ago

Most Expensive

Brilliant Earth

18146459A · Oct 30

£10,776 GBP

$14,350 USD

View

26 more retailers have this diamond

Prices start from £2,092 GBPSave up to £8,684 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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4.29ct Round

£2,092 GBP