Round|Lab Grown|IGI

4.26ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG737568608

Shape and cutting style on the report: Round brilliant

Certificate IGI LG737568608

Diamond specifications and retailer prices

From £1,725 GBP

$2,311 USD

As of October 29, 2026

Save £8,881 GBP (84%) vs most expensive(unlock to see where)

29 retailers carry this diamond

Most expensive: £10,605 GBP at Do Amore Diamonds · As of October 29, 2026

View at Do Amore Diamonds

About this 4.26ct lab-grown round diamond

This 4.26ct 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 LG737568608 or 737568608. Listed at 29 retailers as of October 29, 2026, with prices from £1,725 to £10,605, a £8,881 spread on the same certified stone. Do Amore Diamonds lists it at £10,605. 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

4.26

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle33.2°

Pavilion angle40.8°

OriginLab Grown

Grading LabIGI

CertificateIGI LG737568608

Dimensions10.53 × 10.49 × 6.26 mm

L/W Ratio1.00

Girdle conditionFaceted

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 LG737568608

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: £10,605 GBP|Low: £1,725 GBP|High: £17,845 GBP|Avg: £4,969 GBP

Do Amore Diamonds

Retailer 2

Retailer 3

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Retailer 21

October 30, 2026

Retailer 16£1,725 GBP

Retailer 9£1,917 GBP

Retailer 7£2,455 GBP

Retailer 13£2,706 GBP

Retailer 3£2,720 GBP

Retailer 11£2,794 GBP

Retailer 21£2,867 GBP

Retailer 4£2,963 GBP

Retailer 18£3,140 GBP

Retailer 15£4,200 GBP

Retailer 19£4,235 GBP

Retailer 20£4,530 GBP

Retailer 6£4,816 GBP

Retailer 12£5,023 GBP

Retailer 8£5,148 GBP

Retailer 17£5,383 GBP

Retailer 10£6,893 GBP

Retailer 14£7,093 GBP

Retailer 5£8,287 GBP

Retailer 2£9,993 GBP

Do Amore Diamonds£10,605 GBP

38 data points across 21 retailers

29 retailers£1,725 GBP to £10,605 GBP

Retailer 1

£1,541 GBP

$2,065 USD

Price last confirmed 32 days ago

Retailer 2

£1,677 GBP

$2,247 USD

View

Price last confirmed 17 days ago

Retailer 3

£1,677 GBP

$2,247 USD

View

Price last confirmed 24 days ago

Retailer 4

£1,725 GBP

$2,311 USD

View

Final sale: no returns

Retailer 5

£1,763 GBP

$2,362 USD

View

Price last confirmed 31 days ago

Retailer 6

£1,787 GBP

$2,395 USD

View

Retailer 7

£1,787 GBP

$2,395 USD

View

Price last confirmed 28 days ago

Retailer 8

£1,797 GBP

$2,408 USD

View

Price last confirmed 37 days ago

Retailer 9

£1,917 GBP

$2,569 USD

View

Retailer 10

£2,455 GBP

HK$25,700 HKD

View

Retailer 11

£2,706 GBP

View

Retailer 12

£2,712 GBP

$3,634 USD

View

Price last confirmed 30 days ago

Retailer 13

£2,720 GBP

$3,645 USD

View

Retailer 14

£2,794 GBP

$3,743 USD

View

Retailer 15

£2,867 GBP

$3,842 USD

View

Retailer 16

£2,963 GBP

$3,970 USD

View

Retailer 17

£3,140 GBP

€4,007 EUR

View

Retailer 18

£4,200 GBP

ZAR 90,921 ZAR

View

Retailer 19

£4,235 GBP

A$8,729 AUD

View

Price last confirmed 8 days ago

Retailer 20

£4,530 GBP

$6,070 USD

View

Price last confirmed 10 days ago

B+

Retailer 21

£4,816 GBP

$6,453 USD

View

B+

Retailer 22

£5,023 GBP

$6,731 USD

View

B+

Retailer 23

£5,148 GBP

$6,898 USD

View

B+

Retailer 24

£5,383 GBP

View

B+

Retailer 25

£6,893 GBP

$9,236 USD

View

B+

Retailer 26

£7,093 GBP

SGD 12,843 SGD

View

Retailer 27

£8,287 GBP

A$17,083 AUD

View

Price last confirmed 25 days ago

Retailer 28

£9,993 GBP

$13,390 USD

View

Most Expensive

Do Amore Diamonds

27-B6789C64F · Oct 29

£10,605 GBP

$14,210 USD

View

28 more retailers have this diamond

Prices start from £1,725 GBPSave up to £8,881 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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4.26ct Round

£1,725 GBP