Emerald|Lab Grown|IGI

21.11ct F VS1 Emerald Lab Grown Diamond

ID • F/VS1 • IGI LG756584573

Shape and cutting style on the report: Emerald cut

Certificate IGI LG756584573

Diamond specifications and retailer prices

From £6,859 GBP

$9,190 USD

As of November 2, 2026

Save £18,137 GBP (73%) vs most expensive(unlock to see where)

16 retailers carry this diamond

Most expensive: £29,861 GBP at Brilliant Earth · As of November 2, 2026

View at Brilliant Earth

About this 21.11ct lab-grown emerald diamond

This 21.11ct 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 LG756584573 or 756584573. Listed at 16 retailers as of October 31, 2026, with a 264% 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

21.11

Carat

Colour

VS1

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle26.8°

Pavilion angle43.4°

OriginLab Grown

Grading LabIGI

CertificateIGI LG756584573

Dimensions19.32 × 12.84 × 8.27 mm

L/W Ratio1.50

Culet sizeLong

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 LG756584573

Side View

Caratlytics Score

How it works →

B+

Very Good

Strong quality and value balance

Unlock full score analysis

See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2

Current: £29,861 GBP|Low: £6,585 GBP|High: £30,786 GBP|Avg: £11,531 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

November 2, 2026

Retailer 14£6,859 GBP

Retailer 15£7,133 GBP

Retailer 12£7,135 GBP

Retailer 5£7,442 GBP

Retailer 9£7,874 GBP

Retailer 11£7,915 GBP

Retailer 4£7,957 GBP

Retailer 7£7,957 GBP

Retailer 13£8,710 GBP

Retailer 6£8,948 GBP

Retailer 2£9,617 GBP

Retailer 10£13,302 GBP

Retailer 8£15,079 GBP

Retailer 3£22,053 GBP

Brilliant Earth£29,861 GBP

36 data points across 15 retailers

16 retailers£6,859 GBP to £24,996 GBP

B+

Cheapest Retailer

£6,859 GBP

$9,190 USD

B+

Retailer 2

£7,133 GBP

$9,558 USD

View

Retailer 3

£7,135 GBP

$9,560 USD

View

Price last confirmed 12 days ago

B+

Retailer 4

£7,442 GBP

$9,971 USD

View

B+

Retailer 5

£7,874 GBP

$10,550 USD

View

B+

Retailer 6

£7,915 GBP

$10,605 USD

View

Retailer 7

£7,957 GBP

$10,661 USD

View

Price last confirmed 20 days ago

Retailer 8

£7,957 GBP

$10,661 USD

View

Retailer 9

£8,710 GBP

$11,670 USD

View

Retailer 10

£8,948 GBP

$11,990 USD

View

B+

Retailer 11

£9,617 GBP

View

Retailer 12

£13,302 GBP

€16,975 EUR

View

Retailer 13

£15,079 GBP

A$31,083 AUD

View

Retailer 14

£22,053 GBP

$29,549 USD

View

Retailer 15

£24,996 GBP

$33,492 USD

View

Most Expensive

Brilliant Earth

17006427A · Nov 2

£29,861 GBP

$40,010 USD

View

Price under review

15 more retailers have this diamond

Prices start from £6,859 GBPSave up to £18,137 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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B+

21.11ct Emerald

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