Emerald|Lab Grown|IGI

20.11ct I VS1 Emerald Lab Grown Diamond

ID • I/VS1 • IGI LG618479346

Shape and cutting style on the report: Emerald cut

Certificate IGI LG618479346

Diamond specifications and retailer prices

From $4,380 USD
As of October 31, 2026
Save $17,590 USD (80%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $21,970 USD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 20.11ct lab-grown emerald diamond

This 20.11ct lab-grown emerald sits in the over five carat band, graded I colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG618479346 or 618479346. Listed at 10 retailers as of October 31, 2026, with prices from $4,380 to $21,970, a $17,590 spread on the same certified stone. Brilliant Earth lists it at $21,970. 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

20.11
Carat
I
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG618479346
Dimensions18.79 × 12.63 × 8.35 mm
L/W Ratio1.49
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
18.79 mm12.63 mm20.11 ctI / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG618479346
Side View
Table 63.0%Crown 36.4°Girdle: MediumPavilion 39.4°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 31
Current: $21,970 USD|Low: $4,227 USD|High: $22,650 USD|Avg: $11,147 USD|-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
October 29, 2026
Retailer 8$4,227 USD
Retailer 10$4,379 USD
Retailer 5$4,380 USD
Retailer 11$4,898 USD
Retailer 6$5,808 USD
Retailer 7$6,635 USD
Retailer 9$6,786 USD
Retailer 2$7,287 USD
Retailer 4$14,498 USD
Retailer 3$15,482 USD
Retailer 12$21,413 USD
Brilliant Earth$21,970 USD

20 data points across 12 retailers

10 retailers$4,380 USD to $21,970 USD

Retailer 1
-
$4,379 USD
Price last confirmed 21 days ago
A
Retailer 2
-
$4,380 USD
View
A
Retailer 3
-
$4,898 USD
View
A
Retailer 4
-
$5,808 USD
View
A
Retailer 5
-
$6,635 USD
View
B+
Retailer 6
-
$6,786 USD
View
B+
Retailer 7
-
$7,287 USD
€6,940 EUR
View
B
Retailer 8
-
$15,482 USD
View
B
Retailer 9
-
$21,413 USD
View
Most Expensive
B
Brilliant Earth
13702640A · Oct 31
$21,970 USD
View
9 more retailers have this diamond
Prices start from $4,380 USDSave up to $17,590 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.

A
20.11ct Emerald
$4,380 USD