Round|Lab Grown|IGI

4.31ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG738511288

Shape and cutting style on the report: Round brilliant

Certificate IGI LG738511288

Diamond specifications and retailer prices

From £1,756 GBP

$2,339 USD

As of October 29, 2026

Save £9,034 GBP (84%) vs most expensive(unlock to see where)

28 retailers carry this diamond

Most expensive: £10,791 GBP at Do Amore Diamonds · As of October 29, 2026

View at Do Amore Diamonds

About this 4.31ct lab-grown round diamond

This 4.31ct 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 LG738511288 or 738511288. Listed at 28 retailers as of October 29, 2026, with prices from £1,756 to £10,791, a £9,034 spread on the same certified stone. Do Amore Diamonds lists it at £10,791. 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

4.31

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle34.1°

Pavilion angle40.5°

OriginLab Grown

Grading LabIGI

CertificateIGI LG738511288

Dimensions10.51 × 10.56 × 6.37 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 LG738511288

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: £10,791 GBP|Low: £1,756 GBP|High: £10,791 GBP|Avg: £4,626 GBP

Do Amore Diamonds

Retailer 2

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Retailer 21

October 30, 2026

Retailer 15£1,756 GBP

Retailer 14£1,795 GBP

Retailer 9£1,949 GBP

Retailer 7£2,499 GBP

Retailer 2£2,754 GBP

Retailer 6£2,872 GBP

Retailer 20£2,872 GBP

Retailer 19£2,918 GBP

Retailer 21£3,015 GBP

Retailer 17£3,196 GBP

Retailer 13£4,275 GBP

Retailer 18£4,310 GBP

Retailer 5£4,902 GBP

Retailer 11£5,108 GBP

Retailer 8£5,241 GBP

Retailer 16£5,478 GBP

Retailer 10£7,015 GBP

Retailer 12£7,220 GBP

Retailer 3£8,435 GBP

Retailer 4£10,175 GBP

Do Amore Diamonds£10,791 GBP

39 data points across 21 retailers

28 retailers£1,756 GBP to £10,791 GBP

Retailer 1

£1,569 GBP

$2,089 USD

Price last confirmed 34 days ago

Retailer 2

£1,707 GBP

$2,273 USD

View

Price last confirmed 23 days ago

Retailer 3

£1,707 GBP

$2,273 USD

View

Price last confirmed 16 days ago

Retailer 4

£1,756 GBP

$2,339 USD

View

Final sale: no returns

Retailer 5

£1,795 GBP

$2,390 USD

View

Price last confirmed 32 days ago

Retailer 6

£1,820 GBP

$2,423 USD

View

Retailer 7

£1,820 GBP

$2,423 USD

View

Price last confirmed 27 days ago

Retailer 8

£1,829 GBP

$2,436 USD

View

Price last confirmed 36 days ago

Retailer 9

£1,949 GBP

$2,596 USD

View

Retailer 10

£2,499 GBP

HK$26,000 HKD

View

Retailer 11

£2,754 GBP

View

Retailer 12

£2,760 GBP

$3,676 USD

View

Price last confirmed 32 days ago

Retailer 13

£2,872 GBP

$3,824 USD

View

Retailer 14

£2,872 GBP

$3,825 USD

View

Retailer 15

£2,918 GBP

$3,886 USD

View

Retailer 16

£3,015 GBP

$4,015 USD

View

Retailer 17

£3,196 GBP

€4,054 EUR

View

Retailer 18

£4,275 GBP

ZAR 91,975 ZAR

View

Retailer 19

£4,310 GBP

A$8,830 AUD

View

Price last confirmed 7 days ago

Retailer 20

£4,902 GBP

$6,528 USD

View

B+

Retailer 21

£5,108 GBP

$6,803 USD

View

B+

Retailer 22

£5,241 GBP

$6,979 USD

View

B+

Retailer 23

£5,478 GBP

View

B+

Retailer 24

£7,015 GBP

$9,342 USD

View

B+

Retailer 25

£7,220 GBP

SGD 12,992 SGD

View

Retailer 26

£8,435 GBP

A$17,281 AUD

View

Price last confirmed 25 days ago

Retailer 27

£10,175 GBP

$13,550 USD

View

Most Expensive

Do Amore Diamonds

27-03C36E52C · Oct 29

£10,791 GBP

$14,370 USD

View

27 more retailers have this diamond

Prices start from £1,756 GBPSave up to £9,034 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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4.31ct Round

£1,756 GBP