Cushion|Lab Grown|IGI

6.37ct D VS1 Cushion Lab Grown Diamond

ID • D/VS1 • IGI LG645455952

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG645455952

Diamond specifications and retailer prices

From £1,804 GBP

$2,417 USD

As of October 25, 2026

Save £7,495 GBP (81%) vs most expensive(unlock to see where)

22 retailers carry this diamond

Most expensive: £11,576 GBP at Brilliant Earth · As of October 1, 2026

View at Brilliant Earth

About this 6.37ct lab-grown cushion diamond

This 6.37ct lab-grown cushion sits in the over five carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG645455952 or 645455952. Listed at 22 retailers as of October 25, 2026, with a 416% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

6.37

Carat

Colour

VS1

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle38.3°

Pavilion angle31.5°

OriginLab Grown

Grading LabIGI

CertificateIGI LG645455952

Dimensions10.43 × 10.38 × 6.56 mm

L/W Ratio1.00

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 LG645455952

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 25

Current: £2,398 GBP|Low: £1,513 GBP|High: £5,934 GBP|Avg: £3,070 GBP|+1.0%

Retailer 1

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

October 24, 2026

Retailer 6£1,513 GBP

Retailer 15£1,568 GBP

Retailer 14£1,694 GBP

Retailer 5£1,804 GBP

Retailer 1£2,398 GBP

Retailer 3£2,474 GBP

Retailer 13£2,591 GBP

Retailer 8£2,602 GBP

Retailer 9£3,212 GBP

Retailer 7£3,287 GBP

Retailer 10£3,312 GBP

Retailer 11£4,624 GBP

Retailer 2£4,685 GBP

Retailer 12£4,969 GBP

Retailer 4£5,934 GBP

37 data points across 15 retailers

22 retailers£1,804 GBP to £9,299 GBP

Retailer 1

£1,568 GBP

$2,101 USD

Price last confirmed 18 days ago

Retailer 2

£1,694 GBP

$2,270 USD

View

Price last confirmed 8 days ago

Retailer 3

£1,804 GBP

$2,417 USD

View

Retailer 4

£2,054 GBP

HK$21,500 HKD

View

Price last confirmed 7 days ago

Retailer 5

£2,249 GBP

$3,014 USD

View

Price last confirmed 7 days ago

Retailer 6

£2,398 GBP

View

Retailer 7

£2,474 GBP

$3,315 USD

View

Price last confirmed 7 days ago

Retailer 8

£2,591 GBP

$3,472 USD

View

Price last confirmed 8 days ago

Retailer 9

£2,602 GBP

€3,320 EUR

View

Price last confirmed 7 days ago

Retailer 10

£3,212 GBP

A$6,621 AUD

View

Price last confirmed 8 days ago

Retailer 11

£3,287 GBP

View

Price last confirmed 7 days ago

Retailer 12

£3,312 GBP

ZAR 71,690 ZAR

View

Price last confirmed 11 days ago

Retailer 13

£4,455 GBP

$5,969 USD

View

Price last confirmed 8 days ago

Retailer 14

£4,624 GBP

$6,195 USD

View

Price last confirmed 9 days ago

Retailer 15

£4,685 GBP

A$9,658 AUD

View

Price last confirmed 22 days ago

Retailer 16

£4,969 GBP

View

Price last confirmed 9 days ago

Retailer 17

£5,534 GBP

$7,415 USD

View

Retailer 18

£5,934 GBP

SGD 10,744 SGD

View

Retailer 19

£6,056 GBP

$8,115 USD

View

Price last confirmed 9 days ago

Retailer 20

£9,299 GBP

$12,460 USD

View

Retailer 21

£10,598 GBP

$14,200 USD

View

Price last confirmed 8 days ago

Most Expensive

Brilliant Earth

14102592Y · Oct 1

£11,576 GBP

$15,510 USD

View

Price last confirmed 29 days ago

21 more retailers have this diamond

Prices start from £1,804 GBPSave up to £7,495 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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