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Emerald|Lab Grown|IGI

20.09ct F VVS2 Emerald Lab Grown Diamond

EX • F/VVS2 • IGI LG823668791

Shape and cutting style on the report: Emerald cut

Certificate IGI LG823668791

Diamond specifications and retailer prices

From £3,548 GBP
$4,754 USD
As of October 30, 2026
Save £16,770 GBP (83%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £30,794 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 20.09ct lab-grown emerald diamond

This 20.09ct lab-grown emerald sits in the over five carat band, graded F colour (colourless) and VVS2 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG823668791 or 823668791. Listed at 16 retailers as of October 30, 2026, with a 473% 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

20.09
Carat
F
Colour
VVS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.7°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG823668791
Dimensions18.32 × 12.52 × 8.28 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
18.32 mm12.52 mm20.09 ctF / VVS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG823668791
Side View
Table 67.0%Crown 36.7°Girdle: ThickPavilion 40.7°Culet: LargeDepth 66.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £30,794 GBP|Low: £3,548 GBP|High: £31,749 GBP|Avg: £9,343 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
Retailer 16
Retailer 17
October 31, 2026
Retailer 3£3,548 GBP
Retailer 16£3,718 GBP
Retailer 17£4,065 GBP
Retailer 10£4,116 GBP
Retailer 13£4,116 GBP
Retailer 6£4,334 GBP
Retailer 11£4,599 GBP
Retailer 14£5,143 GBP
Retailer 2£5,239 GBP
Retailer 9£5,855 GBP
Retailer 8£5,982 GBP
Retailer 5£6,015 GBP
Retailer 12£6,418 GBP
Retailer 7£9,057 GBP
Retailer 4£14,741 GBP
Retailer 15£20,318 GBP
Brilliant Earth£30,794 GBP

38 data points across 17 retailers

16 retailers£3,548 GBP to £20,318 GBP

A
Cheapest Retailer
-
£3,548 GBP
$4,754 USD
A
Retailer 2
-
£3,718 GBP
$4,982 USD
View
A
Retailer 3
-
£4,065 GBP
$5,447 USD
View
Final sale: no returns
A
Retailer 4
-
£4,116 GBP
$5,515 USD
View
A
Retailer 5
-
£4,116 GBP
$5,515 USD
View
A
Retailer 6
-
£4,334 GBP
$5,807 USD
View
B+
Retailer 7
-
£4,599 GBP
$6,162 USD
View
B+
Retailer 8
-
£5,143 GBP
$6,891 USD
View
B+
Retailer 9
-
£5,239 GBP
View
Retailer 10
-
£5,982 GBP
$8,015 USD
View
Price last confirmed 13 days ago
B+
Retailer 11
-
£6,015 GBP
$8,060 USD
View
B+
Retailer 12
-
£6,418 GBP
€8,190 EUR
View
Retailer 13
-
£9,057 GBP
A$18,670 AUD
View
Price last confirmed 9 days ago
B
Retailer 14
-
£14,741 GBP
$19,751 USD
View
B
Retailer 15
-
£20,318 GBP
$27,224 USD
View
Most Expensive
Brilliant Earth
21502896A · Oct 30
£30,794 GBP
$41,260 USD
View
Price under review
15 more retailers have this diamond
Prices start from £3,548 GBPSave up to £16,770 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
20.09ct Emerald
£3,548 GBP