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Emerald|Lab Grown|IGI

20.40ct F VS1 Emerald Lab Grown Diamond

ID • F/VS1 • IGI LG662422475

Shape and cutting style on the report: Emerald cut

Certificate IGI LG662422475

Diamond specifications and retailer prices

From $33,848 AUD
$23,776 USD
As of October 31, 2026
Save $47,090 AUD (58%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $80,938 AUD at Aida Diamonds · As of November 1, 2026
View at Aida Diamonds

About this 20.4ct lab-grown emerald diamond

This 20.4ct 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 LG662422475 or 662422475. Listed at 16 retailers as of October 31, 2026, with prices from $33,848 to $80,938, a $47,090 spread on the same certified stone. Aida Diamonds lists it at $80,938. 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

20.40
Carat
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32°
Pavilion angle32.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG662422475
Dimensions18.68 × 13.41 × 8.44 mm
L/W Ratio1.39
Culet sizeLong
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
18.68 mm13.41 mm20.40 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG662422475
Side View
Table 60.0%Crown 32°Girdle: MED-STKPavilion 32.5°Culet: LNGDepth 62.9%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $80,938 AUD|Low: $15,113 AUD|High: $120,898 AUD|Avg: $30,031 AUD|+134.4%
Aida Diamonds
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
November 1, 2026
Retailer 8$18,261 AUD
Retailer 5$33,848 AUD
Retailer 12$36,155 AUD
Retailer 9$37,361 AUD
Retailer 7$37,660 AUD
Retailer 15$40,615 AUD
Retailer 11$41,619 AUD
Retailer 6$41,844 AUD
Retailer 13$42,698 AUD
Retailer 3$43,339 AUD
Retailer 2$44,466 AUD
Retailer 14$47,968 AUD
Retailer 16$62,937 AUD
Aida Diamonds$80,938 AUD
Retailer 10$96,277 AUD
Retailer 4$120,898 AUD

36 data points across 16 retailers

16 retailers$33,848 AUD to $80,938 AUD

Retailer 1
-
$18,261 AUD
$12,827 USD
Price last confirmed 20 days ago
B
Retailer 2
-
$33,848 AUD
$23,776 USD
View
B
Retailer 3
-
$36,155 AUD
$25,397 USD
View
B
Retailer 4
-
$37,361 AUD
$26,244 USD
View
B
Retailer 5
-
$37,660 AUD
$26,454 USD
View
B
Retailer 6
-
$40,615 AUD
$28,530 USD
View
B
Retailer 7
-
$41,619 AUD
$29,235 USD
View
B
Retailer 8
-
$41,844 AUD
$29,393 USD
View
Final sale: no returns
B
Retailer 9
-
$42,698 AUD
$29,993 USD
View
B
Retailer 10
-
$43,339 AUD
$30,443 USD
View
B
Retailer 11
-
$44,466 AUD
£24,594 GBP
View
Retailer 12
-
$47,968 AUD
$33,695 USD
View
Price under review
Retailer 13
-
$62,937 AUD
$44,210 USD
View
Price under review
Most Expensive
B
Aida Diamonds
497240055 · Nov 1
$80,938 AUD
View
13 more retailers have this diamond
Prices start from $33,848 AUDSave up to $47,090 AUD

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
20.40ct Emerald
$33,848 AUD