Round|Lab Grown|IGI

4.26ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG739532839

Shape and cutting style on the report: Round brilliant

Certificate IGI LG739532839

Diamond specifications and retailer prices

From £1,670 GBP

$2,238 USD

As of October 29, 2026

Save £9,823 GBP (85%) vs most expensive(unlock to see where)

26 retailers carry this diamond

Most expensive: £11,493 GBP at Do Amore Diamonds · As of October 30, 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 LG739532839 or 739532839. Listed at 26 retailers as of October 29, 2026, with prices from £1,670 to £11,493, a £9,823 spread on the same certified stone. Do Amore Diamonds lists it at £11,493. 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 angle35.8°

Pavilion angle40.7°

OriginLab Grown

Grading LabIGI

CertificateIGI LG739532839

Dimensions10.37 × 10.29 × 6.46 mm

L/W Ratio1.01

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 LG739532839

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: £11,493 GBP|Low: £1,663 GBP|High: £17,845 GBP|Avg: £4,837 GBP

Do Amore Diamonds

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

Retailer 12

Retailer 13

Retailer 14

Retailer 15

Retailer 16

Retailer 17

Retailer 18

Retailer 19

Retailer 20

Retailer 21

Retailer 22

Retailer 23

Retailer 24

Retailer 25

October 30, 2026

Retailer 5£1,663 GBP

Retailer 3£1,670 GBP

Retailer 24£1,817 GBP

Retailer 20£1,870 GBP

Retailer 6£1,938 GBP

Retailer 14£2,054 GBP

Retailer 15£2,656 GBP

Retailer 25£2,819 GBP

Retailer 8£2,821 GBP

Retailer 13£2,876 GBP

Retailer 4£2,941 GBP

Retailer 7£3,038 GBP

Retailer 10£3,217 GBP

Retailer 22£3,413 GBP

Retailer 19£4,553 GBP

Retailer 23£4,590 GBP

Retailer 12£5,174 GBP

Retailer 11£5,412 GBP

Retailer 16£5,596 GBP

Retailer 21£5,758 GBP

Retailer 18£7,465 GBP

Retailer 17£7,696 GBP

Retailer 9£8,383 GBP

Retailer 2£9,993 GBP

Do Amore Diamonds£11,493 GBP

30 data points across 25 retailers

26 retailers£1,670 GBP to £11,493 GBP

Retailer 1

£1,663 GBP

Price last confirmed 13 days ago

Retailer 2

£1,670 GBP

$2,238 USD

View

Retailer 3

£1,817 GBP

$2,435 USD

View

Retailer 4

£1,870 GBP

$2,506 USD

View

Final sale: no returns

Retailer 5

£1,938 GBP

$2,597 USD

View

Retailer 6

£2,054 GBP

$2,752 USD

View

Retailer 7

£2,656 GBP

HK$27,800 HKD

View

Retailer 8

£2,819 GBP

$3,777 USD

View

Retailer 9

£2,821 GBP

$3,780 USD

View

Retailer 10

£2,876 GBP

View

Retailer 11

£2,941 GBP

$3,940 USD

View

Retailer 12

£3,038 GBP

$4,070 USD

View

Retailer 13

£3,217 GBP

$4,310 USD

View

Retailer 14

£3,413 GBP

€4,355 EUR

View

Retailer 15

£4,553 GBP

ZAR 98,564 ZAR

View

Retailer 16

£4,590 GBP

A$9,462 AUD

View

Price last confirmed 8 days ago

B+

Retailer 17

£5,174 GBP

$6,933 USD

View

B+

Retailer 18

£5,412 GBP

$7,251 USD

View

B+

Retailer 19

£5,596 GBP

$7,498 USD

View

B+

Retailer 20

£5,758 GBP

View

B+

Retailer 21

£7,465 GBP

$10,003 USD

View

B+

Retailer 22

£7,696 GBP

SGD 13,935 SGD

View

Retailer 23

£8,383 GBP

A$17,281 AUD

View

Price last confirmed 22 days ago

Retailer 24

£9,737 GBP

$13,047 USD

View

B+

Retailer 25

£9,993 GBP

$13,390 USD

View

Most Expensive

Do Amore Diamonds

27-239401539 · Oct 29

£11,493 GBP

$15,400 USD

View

25 more retailers have this diamond

Prices start from £1,670 GBPSave up to £9,823 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.

Similar diamonds

4.26ct Round

£1,670 GBP