Radiant|Lab Grown|IGI

3.11ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG727578351

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG727578351

Diamond specifications and retailer prices

From £933 GBP

$1,250 USD

As of October 30, 2026

Save £8,008 GBP (90%) vs most expensive(unlock to see where)

31 retailers carry this diamond

Most expensive: £8,941 GBP at Brilliant Earth · As of October 28, 2026

View at Brilliant Earth

About this 3.11ct lab-grown radiant diamond

This 3.11ct lab-grown radiant 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 LG727578351 or 727578351. Listed at 31 retailers as of October 28, 2026, with prices from £933 to £8,941, a £8,008 spread on the same certified stone. Brilliant Earth lists it at £8,941. 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

3.11

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle41°

Pavilion angle34°

OriginLab Grown

Grading LabIGI

CertificateIGI LG727578351

Dimensions7.40 × 7.40 × 4.86 mm

L/W Ratio1.00

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 LG727578351

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: £8,941 GBP|Low: £933 GBP|High: £8,941 GBP|Avg: £3,022 GBP

Brilliant Earth

Retailer 2

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October 31, 2026

Retailer 20£933 GBP

Retailer 7£1,143 GBP

Retailer 2£1,213 GBP

Retailer 18£1,259 GBP

Retailer 22£1,318 GBP

Retailer 4£1,521 GBP

Retailer 12£1,778 GBP

Retailer 9£1,888 GBP

Retailer 17£2,017 GBP

Retailer 13£2,283 GBP

Retailer 8£2,513 GBP

Retailer 6£2,616 GBP

Retailer 10£2,680 GBP

Retailer 16£3,064 GBP

Retailer 19£3,106 GBP

Retailer 21£3,392 GBP

Retailer 5£3,797 GBP

Retailer 3£3,807 GBP

Retailer 11£3,827 GBP

Retailer 23£4,132 GBP

Retailer 15£4,306 GBP

Retailer 14£5,187 GBP

Brilliant Earth£8,941 GBP

31 data points across 23 retailers

31 retailers£933 GBP to £8,941 GBP

Cheapest Retailer

£933 GBP

$1,250 USD

Retailer 2

£1,022 GBP

$1,369 USD

View

Price last confirmed 23 days ago

Retailer 3

£1,098 GBP

$1,471 USD

View

Price last confirmed 32 days ago

Retailer 4

£1,143 GBP

$1,532 USD

View

Final sale: no returns

Retailer 5

£1,185 GBP

$1,588 USD

View

Price last confirmed 28 days ago

Retailer 6

£1,195 GBP

$1,601 USD

View

Price last confirmed 34 days ago

Retailer 7

£1,213 GBP

$1,625 USD

View

Retailer 8

£1,256 GBP

$1,683 USD

View

Price last confirmed 34 days ago

Retailer 9

£1,259 GBP

$1,687 USD

View

Retailer 10

£1,318 GBP

HK$13,800 HKD

View

Retailer 11

£1,521 GBP

View

Retailer 12

£1,778 GBP

$2,382 USD

View

Retailer 13

£1,888 GBP

€2,409 EUR

View

Price last confirmed 8 days ago

Retailer 14

£2,017 GBP

$2,703 USD

View

Retailer 15

£2,221 GBP

$2,976 USD

View

Retailer 16

£2,221 GBP

$2,976 USD

View

Price last confirmed 21 days ago

Retailer 17

£2,283 GBP

$3,059 USD

View

Retailer 18

£2,388 GBP

$3,199 USD

View

Price last confirmed 31 days ago

Retailer 19

£2,513 GBP

ZAR 54,407 ZAR

View

Retailer 20

£2,616 GBP

View

Retailer 21

£2,680 GBP

A$5,525 AUD

View

Price last confirmed 9 days ago

B+

Retailer 22

£3,064 GBP

$4,105 USD

View

B+

Retailer 23

£3,106 GBP

$4,162 USD

View

B+

Retailer 24

£3,392 GBP

$4,545 USD

View

B+

Retailer 25

£3,797 GBP

$5,088 USD

View

B+

Retailer 26

£3,807 GBP

SGD 6,893 SGD

View

B+

Retailer 27

£3,827 GBP

View

B+

Retailer 28

£4,132 GBP

$5,537 USD

View

Retailer 29

£4,306 GBP

$5,770 USD

View

Price last confirmed 27 days ago

Retailer 30

£5,187 GBP

A$10,692 AUD

View

Price last confirmed 26 days ago

Most Expensive

Brilliant Earth

15743852A · Oct 28

£8,941 GBP

$11,980 USD

View

30 more retailers have this diamond

Prices start from £933 GBPSave up to £8,008 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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