Emerald|Lab Grown|IGI

20.05ct F VS1 Emerald Lab Grown Diamond

ID • F/VS1 • IGI LG825691487

Shape and cutting style on the report: Emerald cut

Certificate IGI LG825691487

Diamond specifications and retailer prices

From £4,309 GBP

$5,783 USD

As of November 2, 2026

Save £14,896 GBP (78%) vs most expensive(unlock to see where)

15 retailers carry this diamond

Most expensive: £28,317 GBP at Brilliant Earth · As of October 31, 2026

View at Brilliant Earth

About this 20.05ct lab-grown emerald diamond

This 20.05ct lab-grown emerald sits in the over five carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG825691487 or 825691487. Listed at 15 retailers as of November 2, 2026, with a 346% 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

20.05

Carat

Colour

VS1

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle34.1°

Pavilion angle38.8°

OriginLab Grown

Grading LabIGI

CertificateIGI LG825691487

Dimensions18.36 × 12.86 × 7.96 mm

L/W Ratio1.43

Culet sizeLarge

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 LG825691487

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: Nov 2

Current: £28,317 GBP|Low: £4,309 GBP|High: £28,317 GBP|Avg: £11,432 GBP

Brilliant Earth

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

November 2, 2026

Retailer 9£4,309 GBP

Retailer 6£5,000 GBP

Retailer 7£5,883 GBP

Retailer 8£6,048 GBP

Retailer 2£6,426 GBP

Retailer 10£7,716 GBP

Retailer 5£9,303 GBP

Retailer 4£9,544 GBP

Retailer 3£17,547 GBP

Retailer 11£19,206 GBP

Brilliant Earth£28,317 GBP

41 data points across 11 retailers

15 retailers£4,309 GBP to £19,206 GBP

Cheapest Retailer

£4,309 GBP

$5,783 USD

B+

Retailer 2

£4,516 GBP

$6,060 USD

View

B+

Retailer 3

£4,999 GBP

$6,708 USD

View

Retailer 4

£4,999 GBP

$6,708 USD

View

Price last confirmed 20 days ago

B+

Retailer 5

£5,000 GBP

$6,710 USD

View

Retailer 6

£5,883 GBP

$7,895 USD

View

Price last confirmed 12 days ago

B+

Retailer 7

£5,934 GBP

$7,963 USD

View

B+

Retailer 8

£6,048 GBP

$8,116 USD

View

B+

Retailer 9

£6,426 GBP

View

Retailer 10

£7,716 GBP

$10,355 USD

View

Retailer 11

£9,303 GBP

€11,889 EUR

View

Retailer 12

£9,544 GBP

A$19,703 AUD

View

Retailer 13

£17,547 GBP

$23,547 USD

View

Retailer 14

£19,206 GBP

$25,773 USD

View

Most Expensive

Brilliant Earth

21107592A · Oct 31

£28,317 GBP

$38,000 USD

View

Price under review

14 more retailers have this diamond

Prices start from £4,309 GBPSave up to £14,896 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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