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Emerald|Lab Grown|IGI

20.12ct F VS1 Emerald Lab Grown Diamond

VG • F/VS1 • IGI LG847609034

Shape and cutting style on the report: Emerald cut

Certificate IGI LG847609034

Diamond specifications and retailer prices

From £3,458 GBP
$4,633 USD
As of November 2, 2026
Save £15,598 GBP (82%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £19,055 GBP at Adiamor · As of November 2, 2026
View at Adiamor

About this 20.12ct lab-grown emerald diamond

This 20.12ct lab-grown emerald sits in the over five carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG847609034 or 847609034. Listed at 12 retailers as of November 2, 2026, with prices from £3,458 to £19,055, a £15,598 spread on the same certified stone. Adiamor lists it at £19,055. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

20.12
Carat
F
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG847609034
Dimensions18.80 × 12.90 × 8.53 mm
L/W Ratio1.46
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
18.80 mm12.90 mm20.12 ctF / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG847609034
Side View
Table 67.0%Crown 34.4°Girdle: MediumPavilion 40.6°Culet: LargeDepth 66.1%

Caratlytics Score

How it works →
A
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: £19,055 GBP|Low: £3,458 GBP|High: £19,055 GBP|Avg: £7,842 GBP
Adiamor
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 5£3,458 GBP
Retailer 10£3,623 GBP
Retailer 8£4,011 GBP
Retailer 7£4,038 GBP
Retailer 4£4,244 GBP
Retailer 9£5,012 GBP
Retailer 2£5,213 GBP
Retailer 3£5,857 GBP
Retailer 11£6,448 GBP
Retailer 6£7,594 GBP
Retailer 12£14,345 GBP
Adiamor£19,055 GBP

9 data points across 12 retailers

12 retailers£3,458 GBP to £19,055 GBP

A
Cheapest Retailer
-
£3,458 GBP
$4,633 USD
A
Retailer 2
-
£3,623 GBP
$4,855 USD
View
B+
Retailer 3
-
£4,011 GBP
$5,374 USD
View
B+
Retailer 4
-
£4,038 GBP
$5,410 USD
View
B+
Retailer 5
-
£4,244 GBP
$5,686 USD
View
B+
Retailer 6
-
£5,012 GBP
$6,715 USD
View
B+
Retailer 7
-
£5,213 GBP
View
B+
Retailer 8
-
£5,857 GBP
$7,848 USD
View
B+
Retailer 9
-
£6,448 GBP
€8,228 EUR
View
B
Retailer 10
-
£7,594 GBP
A$15,655 AUD
View
B
Retailer 11
-
£14,345 GBP
$19,221 USD
View
Most Expensive
B
Adiamor
D-82814565 · Nov 2
£19,055 GBP
$25,532 USD
View
11 more retailers have this diamond
Prices start from £3,458 GBPSave up to £15,598 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.

A
20.12ct Emerald
£3,458 GBP