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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 HK$186,549 HKD
$23,776 USD
As of October 31, 2026
Save HK$58,523 HKD (24%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: HK$346,876 HKD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

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 a 31% 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

20.40
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: HK$346,876 HKD|Low: HK$83,294 HKD|High: HK$666,323 HKD|Avg: HK$165,629 HKD|+9.4%
Brilliant Earth
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 8HK$100,642 HKD
Retailer 5HK$186,549 HKD
Retailer 13HK$199,267 HKD
Retailer 10HK$205,913 HKD
Retailer 7HK$207,561 HKD
Retailer 16HK$223,849 HKD
Retailer 12HK$229,381 HKD
Retailer 6HK$230,620 HKD
Retailer 14HK$235,328 HKD
Retailer 3HK$238,859 HKD
Retailer 9HK$245,072 HKD
Retailer 15HK$264,374 HKD
Brilliant EarthHK$346,876 HKD
Retailer 2HK$446,084 HKD
Retailer 11HK$530,625 HKD
Retailer 4HK$666,323 HKD

35 data points across 16 retailers

16 retailersHK$186,549 HKD to HK$245,072 HKD

Retailer 1
-
HK$100,642 HKD
$12,827 USD
Price last confirmed 20 days ago
B
Retailer 2
-
HK$186,549 HKD
$23,776 USD
View
B
Retailer 3
-
HK$199,267 HKD
$25,397 USD
View
B
Retailer 4
-
HK$205,913 HKD
$26,244 USD
View
B
Retailer 5
-
HK$207,561 HKD
$26,454 USD
View
B
Retailer 6
-
HK$223,849 HKD
$28,530 USD
View
B
Retailer 7
-
HK$229,381 HKD
$29,235 USD
View
B
Retailer 8
-
HK$230,620 HKD
$29,393 USD
View
Final sale: no returns
B
Retailer 9
-
HK$235,328 HKD
$29,993 USD
View
B
Retailer 10
-
HK$238,859 HKD
$30,443 USD
View
B
Retailer 11
-
HK$245,072 HKD
£24,594 GBP
View
Retailer 12
-
HK$264,374 HKD
$33,695 USD
View
Price under review
Most Expensive
Brilliant Earth
21391472A · Oct 29
HK$346,876 HKD
$44,210 USD
View
Price under review
12 more retailers have this diamond
Prices start from HK$186,549 HKDSave up to HK$58,523 HKD

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
HK$186,549 HKD