Radiant|Lab Grown|IGI

6.56ct G VS1 Radiant Lab Grown Diamond

ID • G/VS1 • IGI LG585398307

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

Certificate IGI LG585398307

Diamond specifications and retailer prices

From £851 GBP

$1,140 USD

As of October 31, 2026

Save £3,388 GBP (80%) vs most expensive(unlock to see where)

18 retailers carry this diamond

Most expensive: £4,239 GBP at Brilliant Earth · As of October 31, 2026

View at Brilliant Earth

About this 6.56ct lab-grown radiant diamond

This 6.56ct lab-grown radiant sits in the over five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG585398307 or 585398307. Listed at 18 retailers as of October 31, 2026, with prices from £851 to £4,239, a £3,388 spread on the same certified stone. Brilliant Earth lists it at £4,239. 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

6.56

Carat

Colour

VS1

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle41.5°

Pavilion angle35.2°

OriginLab Grown

Grading LabIGI

CertificateIGI LG585398307

Dimensions13.06 × 9.23 × 6.31 mm

L/W Ratio1.41

Culet sizePointed

Cert comments

This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa

View IGI Report →View Loupe360 Video →

Top View

OriginLab Grown

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG585398307

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 31

Current: £4,239 GBP|Low: £685 GBP|High: £4,239 GBP|Avg: £1,786 GBP

Brilliant Earth

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

November 1, 2026

Retailer 7£694 GBP

Retailer 10£710 GBP

Retailer 15£851 GBP

Retailer 11£1,095 GBP

Retailer 3£1,099 GBP

Retailer 6£1,158 GBP

Retailer 12£1,182 GBP

Retailer 13£1,332 GBP

Retailer 14£1,390 GBP

Retailer 16£1,652 GBP

Retailer 18£1,940 GBP

Retailer 4£2,249 GBP

Retailer 8£2,275 GBP

Retailer 5£2,489 GBP

Retailer 9£2,553 GBP

Retailer 2£2,694 GBP

Retailer 17£3,232 GBP

Brilliant Earth£4,239 GBP

38 data points across 18 retailers

18 retailers£851 GBP to £4,239 GBP

Retailer 1

£666 GBP

$892 USD

Price last confirmed 35 days ago

Retailer 2

£700 GBP

$938 USD

View

Price last confirmed 35 days ago

Retailer 3

£851 GBP

$1,140 USD

View

Retailer 4

£1,095 GBP

View

Retailer 5

£1,099 GBP

$1,472 USD

View

B+

Retailer 6

£1,158 GBP

$1,551 USD

View

Retailer 7

£1,182 GBP

€1,508 EUR

View

Retailer 8

£1,332 GBP

A$2,745 AUD

View

Retailer 9

£1,390 GBP

ZAR 30,096 ZAR

View

Retailer 10

£1,652 GBP

$2,213 USD

View

B+

Retailer 11

£1,940 GBP

$2,599 USD

View

B+

Retailer 12

£2,249 GBP

$3,013 USD

View

Retailer 13

£2,275 GBP

View

Price last confirmed 21 days ago

B+

Retailer 14

£2,489 GBP

$3,335 USD

View

Retailer 15

£2,553 GBP

$3,421 USD

View

Price last confirmed 21 days ago

B+

Retailer 16

£2,694 GBP

View

Retailer 17

£3,232 GBP

$4,330 USD

View

Most Expensive

Brilliant Earth

7628194A · Oct 31

£4,239 GBP

$5,680 USD

View

17 more retailers have this diamond

Prices start from £851 GBPSave up to £3,388 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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6.56ct Radiant

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