Round|Lab Grown|IGI

15.56ct G VS1 Round Lab Grown Diamond

ID • G/VS1 • IGI LG714503973

Shape and cutting style on the report: Round brilliant

Certificate IGI LG714503973

Diamond specifications and retailer prices

From £4,763 GBP

As of October 30, 2026

Save £17,881 GBP (79%) vs most expensive(unlock to see where)

18 retailers carry this diamond

Most expensive: £22,644 GBP at Brilliant Earth · As of October 31, 2026

View at Brilliant Earth

About this 15.56ct lab-grown round diamond

This 15.56ct lab-grown round 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 LG714503973 or 714503973. Listed at 18 retailers as of October 30, 2026, with prices from £4,763 to £22,644, a £17,881 spread on the same certified stone. Brilliant Earth lists it at £22,644. 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

15.56

Carat

Colour

VS1

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle34.9°

Pavilion angle40.9°

OriginLab Grown

Grading LabIGI

CertificateIGI LG714503973

Dimensions16.05 × 15.99 × 9.89 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 LG714503973

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: £22,644 GBP|Low: £4,747 GBP|High: £23,293 GBP|Avg: £8,866 GBP|-2.8%

Brilliant Earth

Retailer 2

Retailer 3

Retailer 4

Retailer 5

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Retailer 8

Retailer 9

Retailer 10

Retailer 11

Retailer 12

Retailer 13

Retailer 14

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Retailer 18

November 1, 2026

Retailer 12£4,763 GBP

Retailer 18£5,097 GBP

Retailer 10£5,301 GBP

Retailer 8£5,605 GBP

Retailer 3£5,912 GBP

Retailer 6£5,912 GBP

Retailer 14£5,915 GBP

Retailer 15£6,751 GBP

Retailer 17£6,796 GBP

Retailer 5£6,853 GBP

Retailer 7£7,019 GBP

Retailer 2£7,402 GBP

Retailer 13£9,153 GBP

Retailer 11£9,778 GBP

Retailer 16£11,311 GBP

Retailer 4£12,098 GBP

Retailer 9£20,239 GBP

Brilliant Earth£22,644 GBP

34 data points across 18 retailers

18 retailers£4,763 GBP to £22,644 GBP

Cheapest Retailer

£4,763 GBP

Retailer 2

£5,097 GBP

$6,830 USD

View

Retailer 3

£5,301 GBP

$7,103 USD

View

B+

Retailer 4

£5,605 GBP

$7,510 USD

View

B+

Retailer 5

£5,912 GBP

$7,922 USD

View

Retailer 6

£5,912 GBP

$7,922 USD

View

Price last confirmed 19 days ago

B+

Retailer 7

£5,915 GBP

$7,925 USD

View

B+

Retailer 8

£6,751 GBP

$9,045 USD

View

B+

Retailer 9

£6,796 GBP

$9,106 USD

View

B+

Retailer 10

£6,853 GBP

$9,182 USD

View

B+

Retailer 11

£7,019 GBP

$9,405 USD

View

B+

Retailer 12

£7,402 GBP

View

B+

Retailer 13

£9,153 GBP

ZAR 198,116 ZAR

View

Retailer 14

£9,778 GBP

€12,477 EUR

View

Retailer 15

£11,311 GBP

A$23,317 AUD

View

Price last confirmed 9 days ago

Retailer 16

£12,098 GBP

$16,210 USD

View

Retailer 17

£20,239 GBP

$27,118 USD

View

Most Expensive

Brilliant Earth

14620564A · Oct 31

£22,644 GBP

$30,340 USD

View

17 more retailers have this diamond

Prices start from £4,763 GBPSave up to £17,881 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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15.56ct Round

£4,763 GBP