Cushion|Lab Grown|IGI

15.65ct H VS1 Cushion Lab Grown Diamond

ID • H/VS1 • IGI LG627413256

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG627413256

Diamond specifications and retailer prices

From £2,936 GBP

As of October 30, 2026

Save £10,491 GBP (78%) vs most expensive(unlock to see where)

14 retailers carry this diamond

Most expensive: £13,426 GBP at Brilliant Earth · As of October 29, 2026

View at Brilliant Earth

About this 15.65ct lab-grown cushion diamond

This 15.65ct lab-grown cushion sits in the over five carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG627413256 or 627413256. Listed at 14 retailers as of October 29, 2026, with prices from £2,936 to £13,426, a £10,491 spread on the same certified stone. Brilliant Earth lists it at £13,426. 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

15.65

Carat

Colour

VS1

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle39.7°

Pavilion angle31.2°

OriginLab Grown

Grading LabIGI

CertificateIGI LG627413256

Dimensions14.80 × 14.01 × 8.74 mm

L/W Ratio1.06

Girdle conditionFaceted

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 LG627413256

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: £13,426 GBP|Low: £2,926 GBP|High: £14,352 GBP|Avg: £6,671 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

October 31, 2026

Retailer 8£2,936 GBP

Retailer 3£3,518 GBP

Retailer 14£3,644 GBP

Retailer 5£3,849 GBP

Retailer 7£4,247 GBP

Retailer 12£4,374 GBP

Retailer 9£5,641 GBP

Retailer 13£5,642 GBP

Retailer 2£5,900 GBP

Retailer 11£6,883 GBP

Retailer 10£8,872 GBP

Retailer 4£10,124 GBP

Retailer 6£12,968 GBP

Brilliant Earth£13,426 GBP

35 data points across 14 retailers

14 retailers£2,936 GBP to £13,426 GBP

Cheapest Retailer

£2,936 GBP

Retailer 2

£3,518 GBP

$4,714 USD

View

Final sale: no returns

Retailer 3

£3,644 GBP

$4,883 USD

View

Price last confirmed 18 days ago

Retailer 4

£3,849 GBP

$5,157 USD

View

Retailer 5

£4,247 GBP

$5,690 USD

View

Retailer 6

£4,374 GBP

$5,861 USD

View

Retailer 7

£5,641 GBP

ZAR 122,097 ZAR

View

Retailer 8

£5,642 GBP

$7,559 USD

View

Price last confirmed 10 days ago

Retailer 9

£5,900 GBP

€7,529 EUR

View

Retailer 10

£6,883 GBP

A$14,189 AUD

View

Price last confirmed 9 days ago

B+

Retailer 11

£8,872 GBP

$11,888 USD

View

Retailer 12

£10,124 GBP

$13,565 USD

View

Retailer 13

£12,968 GBP

$17,376 USD

View

Most Expensive

Brilliant Earth

20602619A · Oct 29

£13,426 GBP

$17,990 USD

View

13 more retailers have this diamond

Prices start from £2,936 GBPSave up to £10,491 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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