Emerald|Lab Grown|IGI

21.05ct F VS1 Emerald Lab Grown Diamond

ID • F/VS1 • IGI LG781605153

Shape and cutting style on the report: Emerald cut

Certificate IGI LG781605153

Diamond specifications and retailer prices

From $13,720 USD
As of October 30, 2026
Save $11,367 USD (45%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $115,775 USD at Diamonds Direct · As of November 1, 2026
View at Diamonds Direct

About this 21.05ct lab-grown emerald diamond

This 21.05ct 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 LG781605153 or 781605153. Listed at 15 retailers as of October 30, 2026, with a 83% 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

21.05
Carat
F
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG781605153
Dimensions18.53 × 13.17 × 8.49 mm
L/W Ratio1.41
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
18.53 mm13.17 mm21.05 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG781605153
Side View
Table 67.0%Crown 33.6°Girdle: Slightly ThickPavilion 40.3°Culet: LargeDepth 64.5%

Caratlytics Score

How it works →
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 30
Current: $115,775 USD|Low: $10,840 USD|High: $115,775 USD|Avg: $28,689 USD|+22.2%
Diamonds Direct
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 1, 2026
Retailer 8$10,840 USD
Retailer 9$13,720 USD
Retailer 3$14,049 USD
Retailer 4$14,239 USD
Retailer 5$15,365 USD
Retailer 7$15,915 USD
Retailer 10$15,915 USD
Retailer 13$15,915 USD
Retailer 11$16,463 USD
Retailer 6$19,886 USD
Retailer 2$43,380 USD
Retailer 12$44,520 USD
Diamonds Direct$115,775 USD

42 data points across 13 retailers

15 retailers$13,720 USD to $25,087 USD

Retailer 1
-
$10,840 USD
Price last confirmed 14 days ago
B
Retailer 2
-
$13,720 USD
View
B
Retailer 3
-
$14,049 USD
View
B
Retailer 4
-
$14,239 USD
View
B
Retailer 5
-
$15,365 USD
View
Final sale: no returns
B
Retailer 6
-
$15,915 USD
View
B
Retailer 7
-
$15,915 USD
View
Retailer 8
-
$15,915 USD
View
Price last confirmed 20 days ago
B
Retailer 9
-
$16,463 USD
View
B
Retailer 10
-
$19,886 USD
£15,658 GBP
View
B
Retailer 11
-
$25,087 USD
View
Retailer 12
-
$43,380 USD
View
Price under review
Retailer 13
-
$44,520 USD
View
Price under review
Most Expensive
Diamonds Direct
819522 · Nov 1
$115,775 USD
View
Price under review
13 more retailers have this diamond
Prices start from $13,720 USDSave up to $11,367 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
21.05ct Emerald
$13,720 USD