Radiant|Lab Grown|IGI

3.18ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG731569276

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

Certificate IGI LG731569276

Diamond specifications and retailer prices

From £743 GBP

$996 USD

As of October 30, 2026

Save £5,854 GBP (89%) vs most expensive(unlock to see where)

16 retailers carry this diamond

Most expensive: £6,598 GBP at Do Amore Diamonds · As of October 30, 2026

View at Do Amore Diamonds

About this 3.18ct lab-grown radiant diamond

This 3.18ct 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 LG731569276 or 731569276. Listed at 16 retailers as of October 30, 2026, with prices from £743 to £6,598, a £5,854 spread on the same certified stone. Do Amore Diamonds lists it at £6,598. 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

3.18

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle44.4°

Pavilion angle35.5°

OriginLab Grown

Grading LabIGI

CertificateIGI LG731569276

Dimensions10.24 × 7.26 × 4.98 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 LG731569276

Side View

Caratlytics Score

How it works →

A+

Exceptional

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: £6,598 GBP|Low: £743 GBP|High: £7,971 GBP|Avg: £2,818 GBP|-17.2%

Do Amore Diamonds

Retailer 2

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October 31, 2026

Retailer 10£743 GBP

Retailer 16£825 GBP

Retailer 5£993 GBP

Retailer 9£997 GBP

Retailer 8£1,043 GBP

Retailer 15£1,405 GBP

Retailer 3£1,581 GBP

Retailer 14£1,784 GBP

Retailer 11£1,823 GBP

Retailer 2£1,858 GBP

Retailer 13£2,460 GBP

Retailer 12£3,244 GBP

Retailer 4£4,112 GBP

Retailer 6£5,288 GBP

Retailer 7£6,441 GBP

Do Amore Diamonds£6,598 GBP

33 data points across 16 retailers

16 retailers£743 GBP to £6,598 GBP

A+

Cheapest Retailer

£743 GBP

$996 USD

Retailer 2

£825 GBP

$1,106 USD

View

Retailer 3

£993 GBP

$1,330 USD

View

Retailer 4

£997 GBP

$1,336 USD

View

Retailer 5

£1,043 GBP

$1,398 USD

View

Final sale: no returns

Retailer 6

£1,405 GBP

$1,882 USD

View

Retailer 7

£1,581 GBP

€2,018 EUR

View

Price last confirmed 7 days ago

Retailer 8

£1,784 GBP

$2,390 USD

View

Retailer 9

£1,823 GBP

$2,442 USD

View

Retailer 10

£1,858 GBP

$2,490 USD

View

Retailer 11

£2,460 GBP

$3,296 USD

View

B+

Retailer 12

£3,244 GBP

View

Retailer 13

£4,112 GBP

$5,510 USD

View

Price last confirmed 12 days ago

Retailer 14

£5,288 GBP

A$10,901 AUD

View

Price last confirmed 22 days ago

Retailer 15

£6,441 GBP

$8,630 USD

View

Most Expensive

Do Amore Diamonds

27-41DED3EF0 · Oct 30

£6,598 GBP

$8,840 USD

View

15 more retailers have this diamond

Prices start from £743 GBPSave up to £5,854 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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A+

3.18ct Radiant

£743 GBP