Emerald|Lab Grown|IGI

20.08ct F VS1 Emerald Lab Grown Diamond

ID • F/VS1 • IGI LG835646257

Shape and cutting style on the report: Emerald cut

Certificate IGI LG835646257

Diamond specifications and retailer prices

From £4,239 GBP
$5,688 USD
As of November 1, 2026
Save £15,105 GBP (78%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £19,344 GBP at Adiamor · As of October 31, 2026
View at Adiamor

About this 20.08ct lab-grown emerald diamond

This 20.08ct 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 LG835646257 or 835646257. Listed at 14 retailers as of October 31, 2026, with prices from £4,239 to £19,344, a £15,105 spread on the same certified stone. Adiamor lists it at £19,344. 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

20.08
Carat
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle26°
Pavilion angle36.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG835646257
Dimensions18.05 × 13.09 × 8.18 mm
L/W Ratio1.38
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
18.05 mm13.09 mm20.08 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG835646257
Side View
Table 63.0%Crown 26°Girdle: MediumPavilion 36.5°Culet: LargeDepth 62.5%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: £19,344 GBP|Low: £4,239 GBP|High: £19,667 GBP|Avg: £10,333 GBP|-0.7%
Adiamor
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 3£4,239 GBP
Retailer 7£5,280 GBP
Retailer 2£5,620 GBP
Retailer 9£6,275 GBP
Retailer 6£6,786 GBP
Retailer 5£10,092 GBP
Retailer 8£10,440 GBP
Retailer 4£15,759 GBP
Adiamor£19,344 GBP

41 data points across 9 retailers

14 retailers£4,239 GBP to £19,344 GBP

A
Cheapest Retailer
-
£4,239 GBP
$5,688 USD
Final sale: no returns
Retailer 2
-
£4,931 GBP
$6,617 USD
View
Price last confirmed 22 days ago
Retailer 3
-
£5,128 GBP
$6,882 USD
View
Price last confirmed 23 days ago
B+
Retailer 4
-
£5,280 GBP
$7,085 USD
View
B+
Retailer 5
-
£5,620 GBP
View
Retailer 6
-
£5,720 GBP
$7,676 USD
View
Price last confirmed 30 days ago
Retailer 7
-
£5,720 GBP
$7,676 USD
View
Price last confirmed 20 days ago
B+
Retailer 8
-
£6,275 GBP
$8,421 USD
View
B
Retailer 9
-
£6,786 GBP
$9,106 USD
View
Retailer 10
-
£6,790 GBP
$9,112 USD
View
Price last confirmed 33 days ago
B
Retailer 11
-
£10,092 GBP
A$20,836 AUD
View
B
Retailer 12
-
£10,440 GBP
€13,343 EUR
View
B
Retailer 13
-
£15,759 GBP
$21,148 USD
View
Most Expensive
B
Adiamor
D-82211268 · Oct 31
£19,344 GBP
$25,958 USD
View
13 more retailers have this diamond
Prices start from £4,239 GBPSave up to £15,105 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
20.08ct Emerald
£4,239 GBP