Emerald|Lab Grown|IGI

20.00ct F VS1 Emerald Lab Grown Diamond

ID • F/VS1 • IGI LG818611254

Shape and cutting style on the report: Emerald cut

Certificate IGI LG818611254

Diamond specifications and retailer prices

From $9,383 USD
As of November 1, 2026
Save $15,644 USD (63%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $38,600 USD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 20ct lab-grown emerald diamond

This 20ct 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 LG818611254 or 818611254. Listed at 7 retailers as of October 31, 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

20.00
Carat
F
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.9°
Pavilion angle41.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818611254
Dimensions18.85 × 13.03 × 7.94 mm
L/W Ratio1.45
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
18.85 mm13.03 mm20.00 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818611254
Side View
Table 73.0%Crown 40.9°Girdle: MediumPavilion 41.6°Culet: LargeDepth 60.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $38,600 USD|Low: $9,383 USD|High: $42,437 USD|Avg: $23,497 USD|-0.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 2$9,383 USD
Retailer 7$10,827 USD
Retailer 4$15,029 USD
Retailer 6$20,576 USD
Retailer 5$24,640 USD
Retailer 3$25,027 USD
Brilliant Earth$38,600 USD
Retailer 8$42,437 USD

26 data points across 8 retailers

7 retailers$9,383 USD to $25,027 USD

B+
Cheapest Retailer
-
$9,383 USD
Retailer 2
-
$10,827 USD
View
Price last confirmed 84 days ago
B
Retailer 3
-
$15,029 USD
€14,313 EUR
View
Retailer 4
-
$20,576 USD
View
Price last confirmed 8 days ago
B
Retailer 5
-
$24,640 USD
View
B
Retailer 6
-
$25,027 USD
View
Most Expensive
Brilliant Earth
21687079A · Oct 31
$38,600 USD
View
Price under review
6 more retailers have this diamond
Prices start from $9,383 USDSave up to $15,644 USD

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+
20.00ct Emerald
$9,383 USD