Radiant|Lab Grown|IGI

3.11ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG737568554

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

Certificate IGI LG737568554

Diamond specifications and retailer prices

From £933 GBP

$1,250 USD

As of October 30, 2026

Save £5,795 GBP (86%) vs most expensive(unlock to see where)

28 retailers carry this diamond

Most expensive: £6,728 GBP at Blue Nile · As of October 29, 2026

View at Blue Nile

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 LG737568554 or 737568554. Listed at 28 retailers as of October 29, 2026, with prices from £933 to £6,728, a £5,795 spread on the same certified stone. Blue Nile lists it at £6,728. 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 angle40.2°

Pavilion angle34.1°

OriginLab Grown

Grading LabIGI

CertificateIGI LG737568554

Dimensions10.36 × 7.37 × 4.79 mm

L/W Ratio1.41

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 LG737568554

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: £6,728 GBP|Low: £933 GBP|High: £8,941 GBP|Avg: £2,740 GBP

Blue Nile

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October 31, 2026

Retailer 24£933 GBP

Retailer 9£1,082 GBP

Retailer 16£1,111 GBP

Retailer 23£1,189 GBP

Retailer 2£1,243 GBP

Retailer 20£1,259 GBP

Retailer 3£1,318 GBP

Retailer 6£1,521 GBP

Retailer 18£1,778 GBP

Retailer 12£1,888 GBP

Retailer 19£2,017 GBP

Retailer 17£2,221 GBP

Retailer 13£2,283 GBP

Retailer 10£2,513 GBP

Retailer 8£2,616 GBP

Retailer 14£2,680 GBP

Retailer 21£3,106 GBP

Retailer 25£3,392 GBP

Retailer 7£3,797 GBP

Retailer 5£3,807 GBP

Retailer 11£3,827 GBP

Retailer 4£4,132 GBP

Retailer 15£4,265 GBP

Retailer 22£6,075 GBP

Blue Nile£6,728 GBP

29 data points across 25 retailers

28 retailers£933 GBP to £6,728 GBP

Cheapest Retailer

£933 GBP

$1,250 USD

Retailer 2

£1,082 GBP

$1,450 USD

View

Retailer 3

£1,111 GBP

$1,489 USD

View

Retailer 4

£1,189 GBP

$1,593 USD

View

Final sale: no returns

Retailer 5

£1,243 GBP

$1,665 USD

View

Retailer 6

£1,259 GBP

$1,687 USD

View

Retailer 7

£1,318 GBP

HK$13,800 HKD

View

Retailer 8

£1,521 GBP

View

Retailer 9

£1,712 GBP

View

Price last confirmed 16 days ago

Retailer 10

£1,778 GBP

$2,382 USD

View

Retailer 11

£1,888 GBP

€2,409 EUR

View

Price last confirmed 8 days ago

Retailer 12

£2,017 GBP

$2,703 USD

View

Retailer 13

£2,221 GBP

$2,976 USD

View

Retailer 14

£2,283 GBP

$3,059 USD

View

Retailer 15

£2,513 GBP

ZAR 54,407 ZAR

View

B+

Retailer 16

£2,616 GBP

View

Retailer 17

£2,680 GBP

A$5,525 AUD

View

Price last confirmed 9 days ago

B+

Retailer 18

£3,064 GBP

$4,105 USD

View

B+

Retailer 19

£3,106 GBP

$4,162 USD

View

B+

Retailer 20

£3,392 GBP

$4,545 USD

View

B+

Retailer 21

£3,797 GBP

$5,088 USD

View

B+

Retailer 22

£3,807 GBP

SGD 6,893 SGD

View

B+

Retailer 23

£3,827 GBP

View

B+

Retailer 24

£4,132 GBP

$5,537 USD

View

Retailer 25

£4,265 GBP

$5,715 USD

View

Price last confirmed 10 days ago

Retailer 26

£5,112 GBP

A$10,538 AUD

View

Price last confirmed 33 days ago

Retailer 27

£6,075 GBP

$8,140 USD

View

Most Expensive

Blue Nile

27482522 · Oct 29

£6,728 GBP

$9,015 USD

View

27 more retailers have this diamond

Prices start from £933 GBPSave up to £5,795 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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