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Emerald|Lab Grown|IGI

20.04ct F VS1 Emerald Lab Grown Diamond

ID • F/VS1 • IGI LG816688789

Shape and cutting style on the report: Emerald cut

Certificate IGI LG816688789

Diamond specifications and retailer prices

From £7,006 GBP
$9,402 USD
As of November 1, 2026
Save £11,680 GBP (63%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £28,824 GBP at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 20.04ct lab-grown emerald diamond

This 20.04ct 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 LG816688789 or 816688789. Listed at 9 retailers as of November 1, 2026, with a 167% 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

20.04
Carat
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.9°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816688789
Dimensions18.25 × 13.07 × 8.00 mm
L/W Ratio1.40
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
18.25 mm13.07 mm20.04 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816688789
Side View
Table 70.0%Crown 38.9°Girdle: Slightly ThickPavilion 39.3°Culet: LargeDepth 61.2%

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 1
Current: £28,824 GBP|Low: £6,789 GBP|High: £36,797 GBP|Avg: £16,460 GBP|-0.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 2£7,006 GBP
Retailer 3£7,009 GBP
Retailer 8£7,238 GBP
Retailer 9£9,796 GBP
Retailer 5£11,222 GBP
Retailer 7£18,398 GBP
Retailer 4£18,686 GBP
Brilliant Earth£28,824 GBP
Retailer 6£34,405 GBP

23 data points across 9 retailers

9 retailers£7,006 GBP to £18,686 GBP

B+
Cheapest Retailer
-
£7,006 GBP
$9,402 USD
B+
Retailer 2
-
£7,009 GBP
$9,405 USD
View
Retailer 3
-
£7,238 GBP
$9,713 USD
View
Price last confirmed 14 days ago
Retailer 4
-
£9,796 GBP
$13,146 USD
View
Price last confirmed 12 days ago
B
Retailer 5
-
£11,222 GBP
€14,342 EUR
View
B
Retailer 6
-
£18,398 GBP
$24,689 USD
View
B
Retailer 7
-
£18,686 GBP
$25,076 USD
View
Most Expensive
Brilliant Earth
21034779A · Nov 2
£28,824 GBP
$38,680 USD
View
Price under review
7 more retailers have this diamond
Prices start from £7,006 GBPSave up to £11,680 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+
20.04ct Emerald
£7,006 GBP