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Emerald|Lab Grown|IGI

20.83ct F VS1 Emerald Lab Grown Diamond

ID • F/VS1 • IGI LG790633013

Shape and cutting style on the report: Emerald cut

Certificate IGI LG790633013

Diamond specifications and retailer prices

From £6,983 GBP
$9,356 USD
As of October 31, 2026
Save £15,226 GBP (69%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £29,465 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 20.83ct lab-grown emerald diamond

This 20.83ct 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 LG790633013 or 790633013. Listed at 10 retailers as of October 31, 2026, with a 218% 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

20.83
Carat
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.2°
Pavilion angle38.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG790633013
Dimensions18.85 × 12.59 × 8.40 mm
L/W Ratio1.50
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
18.85 mm12.59 mm20.83 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG790633013
Side View
Table 64.0%Crown 39.2°Girdle: MED-STKPavilion 38.5°Culet: LargeDepth 66.7%

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 31
Current: £29,465 GBP|Low: £6,624 GBP|High: £30,376 GBP|Avg: £14,576 GBP|-3.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 7£6,624 GBP
Retailer 4£6,983 GBP
Retailer 5£6,983 GBP
Retailer 10£7,133 GBP
Retailer 2£8,355 GBP
Retailer 3£13,255 GBP
Retailer 9£18,733 GBP
Retailer 6£22,209 GBP
Retailer 8£27,925 GBP
Brilliant Earth£29,465 GBP

40 data points across 10 retailers

10 retailers£6,983 GBP to £22,209 GBP

Retailer 1
-
£6,624 GBP
$8,875 USD
Price last confirmed 11 days ago
B+
Retailer 2
-
£6,983 GBP
$9,356 USD
View
B+
Retailer 3
-
£6,983 GBP
HK$73,100 HKD
View
B+
Retailer 4
-
£7,133 GBP
$9,558 USD
View
B+
Retailer 5
-
£8,355 GBP
View
B
Retailer 6
-
£13,255 GBP
€16,915 EUR
View
B
Retailer 7
-
£18,733 GBP
$25,101 USD
View
B
Retailer 8
-
£22,209 GBP
$29,758 USD
View
Retailer 9
-
£27,925 GBP
$37,416 USD
View
Price under review
Most Expensive
Brilliant Earth
20388070A · Oct 31
£29,465 GBP
$39,480 USD
View
Price under review
9 more retailers have this diamond
Prices start from £6,983 GBPSave up to £15,226 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+
20.83ct Emerald
£6,983 GBP