Emerald|Lab Grown|IGI

20.10ct F VS2 Emerald Lab Grown Diamond

VG • F/VS2 • IGI LG821674718

Shape and cutting style on the report: Emerald cut

Certificate IGI LG821674718

Diamond specifications and retailer prices

From £5,333 GBP
$7,146 USD
As of October 26, 2026
Save £12,920 GBP (71%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £18,254 GBP at Adiamor · As of October 30, 2026
View at Adiamor

About this 20.1ct lab-grown emerald diamond

This 20.1ct lab-grown emerald sits in the over five carat band, graded F colour (colourless) and VS2 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG821674718 or 821674718. Listed at 9 retailers as of October 26, 2026, with prices from £5,333 to £18,254, a £12,920 spread on the same certified stone. Adiamor lists it at £18,254. 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

20.10
Carat
F
Colour
VS2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.6°
Pavilion angle37.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG821674718
Dimensions18.19 × 13.09 × 8.03 mm
L/W Ratio1.39
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
18.19 mm13.09 mm20.10 ctF / VS2
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821674718
Side View
Table 73.0%Crown 36.6°Girdle: Very ThickPavilion 37.9°Culet: LargeDepth 61.3%

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: Oct 26
Current: £18,254 GBP|Low: £3,667 GBP|High: £18,254 GBP|Avg: £8,028 GBP
Adiamor
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 8£3,667 GBP
Retailer 7£4,195 GBP
Retailer 6£4,253 GBP
Retailer 5£5,333 GBP
Retailer 4£5,336 GBP
Retailer 2£5,422 GBP
Retailer 3£5,663 GBP
Retailer 9£15,258 GBP
Adiamor£18,254 GBP

30 data points across 9 retailers

9 retailers£5,333 GBP to £18,254 GBP

Retailer 1
-
£3,667 GBP
$4,913 USD
Price last confirmed 40 days ago
Retailer 2
-
£4,195 GBP
$5,621 USD
View
Price last confirmed 39 days ago
Retailer 3
-
£4,253 GBP
$5,699 USD
View
Price last confirmed 19 days ago
B+
Retailer 4
-
£5,333 GBP
$7,146 USD
View
B
Retailer 5
-
£5,336 GBP
$7,150 USD
View
B+
Retailer 6
-
£5,422 GBP
View
B
Retailer 7
-
£5,663 GBP
$7,588 USD
View
B
Retailer 8
-
£15,258 GBP
$20,444 USD
View
Most Expensive
C
Adiamor
D-81629657 · Oct 30
£18,254 GBP
$24,458 USD
View
8 more retailers have this diamond
Prices start from £5,333 GBPSave up to £12,920 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+
20.10ct Emerald
£5,333 GBP