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Emerald|Lab Grown|IGI

21.08ct F VS1 Emerald Lab Grown Diamond

VG • F/VS1 • IGI LG831686789

Shape and cutting style on the report: Emerald cut

Certificate IGI LG831686789

Diamond specifications and retailer prices

From £4,326 GBP
$5,796 USD
As of November 2, 2026
Save £16,495 GBP (79%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £20,820 GBP at Adiamor · As of October 31, 2026
View at Adiamor

About this 21.08ct lab-grown emerald diamond

This 21.08ct 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 LG831686789 or 831686789. Listed at 5 retailers as of October 31, 2026, with prices from £4,326 to £20,820, a £16,495 spread on the same certified stone. Adiamor lists it at £20,820. 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

21.08
Carat
F
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.5°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831686789
Dimensions19.07 × 12.96 × 8.50 mm
L/W Ratio1.47
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
19.07 mm12.96 mm21.08 ctF / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831686789
Side View
Table 64.0%Crown 32.5°Girdle: MED-STKPavilion 40.5°Culet: LargeDepth 65.6%

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: £20,820 GBP|Low: £4,326 GBP|High: £20,820 GBP|Avg: £9,896 GBP
Adiamor
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 31, 2026
Retailer 4£4,326 GBP
Retailer 2£5,297 GBP
Retailer 3£6,544 GBP
Retailer 5£14,579 GBP
Adiamor£20,820 GBP

4 data points across 5 retailers

5 retailers£4,326 GBP to £20,820 GBP

B+
Cheapest Retailer
-
£4,326 GBP
$5,796 USD
B+
Retailer 2
-
£5,297 GBP
View
B+
Retailer 3
-
£6,544 GBP
€8,351 EUR
View
B
Retailer 4
-
£14,579 GBP
$19,535 USD
View
Most Expensive
B
Adiamor
D-82855268 · Oct 31
£20,820 GBP
$27,897 USD
View
4 more retailers have this diamond
Prices start from £4,326 GBPSave up to £16,495 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.

B+
21.08ct Emerald
£4,326 GBP