Round|Lab Grown|IGI

6.75ct F IF Round Lab Grown Diamond

ID • F/IF • IGI LG729550871

Shape and cutting style on the report: Round brilliant

Certificate IGI LG729550871

Diamond specifications and retailer prices

From £6,519 GBP

As of October 30, 2026

Save £22,943 GBP (78%) vs most expensive(unlock to see where)

26 retailers carry this diamond

Most expensive: £29,462 GBP at With Clarity · As of October 31, 2026

View at With Clarity

About this 6.75ct lab-grown round diamond

This 6.75ct lab-grown round sits in the over five carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG729550871 or 729550871. Listed at 26 retailers as of October 30, 2026, with prices from £6,519 to £29,462, a £22,943 spread on the same certified stone. With Clarity lists it at £29,462. 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

6.75

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle35.5°

Pavilion angle40.9°

OriginLab Grown

Grading LabIGI

CertificateIGI LG729550871

Dimensions12.04 × 11.99 × 7.48 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 LG729550871

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 30

Current: £9,183 GBP|Low: £6,519 GBP|High: £29,462 GBP|Avg: £12,697 GBP|-2.0%

Retailer 1

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

With Clarity

November 1, 2026

Retailer 2£6,519 GBP

Retailer 7£6,586 GBP

Retailer 18£6,804 GBP

Retailer 16£6,850 GBP

Retailer 6£7,376 GBP

Retailer 9£7,640 GBP

Retailer 13£7,717 GBP

Retailer 10£7,754 GBP

Retailer 17£7,776 GBP

Retailer 15£8,592 GBP

Retailer 1£9,183 GBP

Retailer 20£12,762 GBP

Retailer 12£12,993 GBP

Retailer 19£13,974 GBP

Retailer 8£13,984 GBP

Retailer 4£13,989 GBP

Retailer 5£14,783 GBP

Retailer 11£14,821 GBP

Retailer 14£18,730 GBP

Retailer 21£21,279 GBP

Retailer 3£24,152 GBP

With Clarity£29,462 GBP

30 data points across 22 retailers

26 retailers£6,519 GBP to £29,462 GBP

Cheapest Retailer

£6,519 GBP

Retailer 2

£6,586 GBP

$8,825 USD

View

Retailer 3

£6,804 GBP

$9,117 USD

View

Retailer 4

£6,850 GBP

$9,178 USD

View

B+

Retailer 5

£7,376 GBP

$9,883 USD

View

Final sale: no returns

B+

Retailer 6

£7,640 GBP

$10,237 USD

View

Retailer 7

£7,717 GBP

$10,340 USD

View

Price last confirmed 14 days ago

B+

Retailer 8

£7,753 GBP

$10,388 USD

View

B+

Retailer 9

£7,754 GBP

$10,390 USD

View

Retailer 10

£7,776 GBP

$10,419 USD

View

Retailer 11

£7,804 GBP

$10,456 USD

View

Price last confirmed 16 days ago

B+

Retailer 12

£8,592 GBP

$11,512 USD

View

B+

Retailer 13

£9,183 GBP

View

B+

Retailer 14

£12,762 GBP

$17,100 USD

View

B+

Retailer 15

£12,993 GBP

€16,580 EUR

View

B+

Retailer 16

£13,202 GBP

$17,689 USD

View

B+

Retailer 17

£13,974 GBP

$18,724 USD

View

B+

Retailer 18

£13,984 GBP

View

Retailer 19

£13,989 GBP

$18,744 USD

View

B+

Retailer 20

£14,783 GBP

ZAR 319,998 ZAR

View

Retailer 21

£14,821 GBP

A$30,552 AUD

View

Price last confirmed 10 days ago

Retailer 22

£18,730 GBP

A$38,610 AUD

View

Price last confirmed 24 days ago

Retailer 23

£19,636 GBP

$26,310 USD

View

Price last confirmed 18 days ago

Retailer 24

£21,279 GBP

$28,511 USD

View

Retailer 25

£24,152 GBP

$32,362 USD

View

Most Expensive

With Clarity

729550871 · Oct 31

£29,462 GBP

$39,476 USD

View

25 more retailers have this diamond

Prices start from £6,519 GBPSave up to £22,943 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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6.75ct Round

£6,519 GBP