Cushion|Lab Grown|IGI

6.55ct D VS2 Cushion Lab Grown Diamond

ID • D/VS2 • IGI LG644484590

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG644484590

Diamond specifications and retailer prices

From £1,213 GBP

$1,625 USD

As of October 29, 2026

Save £4,026 GBP (77%) vs most expensive(unlock to see where)

20 retailers carry this diamond

Most expensive: £5,239 GBP at Brilliant Earth · As of October 29, 2026

View at Brilliant Earth

About this 6.55ct lab-grown cushion diamond

This 6.55ct lab-grown cushion sits in the over five carat band, graded D colour (colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG644484590 or 644484590. Listed at 20 retailers as of October 29, 2026, with prices from £1,213 to £5,239, a £4,026 spread on the same certified stone. Brilliant Earth lists it at £5,239. 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

6.55

Carat

Colour

VS2

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle37.8°

Pavilion angle32°

OriginLab Grown

Grading LabIGI

CertificateIGI LG644484590

Dimensions11.71 × 9.74 × 6.39 mm

L/W Ratio1.20

Girdle conditionFaceted

Culet sizePointed

Cert comments

This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa

View IGI Report →View Loupe360 Video →

Top View

OriginLab Grown

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG644484590

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 29

Current: £5,239 GBP|Low: £1,213 GBP|High: £5,910 GBP|Avg: £2,804 GBP|-3.0%

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

Retailer 19

Retailer 20

October 30, 2026

Retailer 16£1,213 GBP

Retailer 12£1,257 GBP

Retailer 18£1,291 GBP

Retailer 2£1,350 GBP

Retailer 9£1,452 GBP

Retailer 6£1,578 GBP

Retailer 13£1,774 GBP

Retailer 4£1,797 GBP

Retailer 14£1,927 GBP

Retailer 19£2,022 GBP

Retailer 3£2,735 GBP

Retailer 10£3,037 GBP

Retailer 7£3,225 GBP

Retailer 15£3,608 GBP

Retailer 5£3,691 GBP

Retailer 8£4,202 GBP

Retailer 20£4,306 GBP

Retailer 11£4,423 GBP

Retailer 17£4,512 GBP

Brilliant Earth£5,239 GBP

32 data points across 20 retailers

20 retailers£1,213 GBP to £5,239 GBP

Cheapest Retailer

£1,213 GBP

$1,625 USD

Final sale: no returns

Retailer 2

£1,257 GBP

$1,684 USD

View

Price last confirmed 18 days ago

Retailer 3

£1,291 GBP

$1,730 USD

View

Retailer 4

£1,350 GBP

View

Retailer 5

£1,452 GBP

HK$15,200 HKD

View

Retailer 6

£1,578 GBP

$2,114 USD

View

Retailer 7

£1,774 GBP

View

Retailer 8

£1,797 GBP

$2,408 USD

View

Retailer 9

£1,927 GBP

€2,459 EUR

View

Retailer 10

£2,022 GBP

$2,709 USD

View

B+

Retailer 11

£2,735 GBP

$3,664 USD

View

B+

Retailer 12

£3,037 GBP

View

B+

Retailer 13

£3,225 GBP

$4,321 USD

View

B+

Retailer 14

£3,608 GBP

View

B+

Retailer 15

£3,691 GBP

$4,946 USD

View

B+

Retailer 16

£4,202 GBP

SGD 7,608 SGD

View

Retailer 17

£4,306 GBP

A$8,877 AUD

View

Price last confirmed 25 days ago

Retailer 18

£4,423 GBP

$5,927 USD

View

Retailer 19

£4,512 GBP

$6,045 USD

View

Price last confirmed 11 days ago

Most Expensive

Brilliant Earth

14721905A · Oct 29

£5,239 GBP

$7,020 USD

View

19 more retailers have this diamond

Prices start from £1,213 GBPSave up to £4,026 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.

Similar diamonds

6.55ct Cushion

£1,213 GBP