Emerald|Lab Grown|IGI

18.45ct F VS2 Emerald Lab Grown Diamond

ID • F/VS2 • IGI LG687566008

Shape and cutting style on the report: Emerald cut

Certificate IGI LG687566008

Diamond specifications and retailer prices

From $4,920 USD
As of October 30, 2026
Save $15,956 USD (76%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $29,980 USD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 18.45ct lab-grown emerald diamond

This 18.45ct lab-grown emerald sits in the over five carat band, graded F colour (colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG687566008 or 687566008. Listed at 18 retailers as of October 30, 2026, with a 324% 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

18.45
Carat
F
Color
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.6°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG687566008
Dimensions17.07 × 12.07 × 8.05 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
17.07 mm12.07 mm18.45 ctF / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG687566008
Side View
Table 67.0%Crown 41.6°Girdle: Slightly ThickPavilion 40.6°Culet: LargeDepth 66.7%

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 30
Current: $29,980 USD|Low: $4,920 USD|High: $29,980 USD|Avg: $9,664 USD
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
Retailer 17
November 1, 2026
Retailer 13$4,920 USD
Retailer 16$5,156 USD
Retailer 8$5,707 USD
Retailer 14$5,707 USD
Retailer 12$5,710 USD
Retailer 5$5,982 USD
Retailer 7$5,999 USD
Retailer 15$6,775 USD
Retailer 4$7,156 USD
Retailer 10$7,275 USD
Retailer 3$8,220 USD
Retailer 17$8,822 USD
Retailer 11$10,515 USD
Retailer 2$12,791 USD
Retailer 9$20,472 USD
Retailer 6$20,876 USD
Brilliant Earth$29,980 USD

43 data points across 17 retailers

18 retailers$4,920 USD to $20,876 USD

A
Cheapest Retailer
-
$4,920 USD
A
Retailer 2
-
$5,156 USD
View
B+
Retailer 3
-
$5,707 USD
View
Retailer 4
-
$5,707 USD
View
Price last confirmed 19 days ago
B+
Retailer 5
-
$5,710 USD
View
B+
Retailer 6
-
$5,982 USD
View
B+
Retailer 7
-
$5,999 USD
View
Final sale: no returns
B+
Retailer 8
-
$6,775 USD
View
B+
Retailer 9
-
$7,156 USD
View
B+
Retailer 10
-
$7,275 USD
£5,728 GBP
View
Retailer 11
-
$8,220 USD
View
Price last confirmed 10 days ago
Retailer 12
-
$8,822 USD
View
Price last confirmed 8 days ago
Retailer 13
-
$9,517 USD
View
Price last confirmed 76 days ago
B
Retailer 14
-
$10,515 USD
€10,014 EUR
View
B
Retailer 15
-
$12,791 USD
A$19,679 AUD
View
B
Retailer 16
-
$20,472 USD
View
B
Retailer 17
-
$20,876 USD
View
Most Expensive
Brilliant Earth
16226712A · Oct 31
$29,980 USD
View
Price under review
17 more retailers have this diamond
Prices start from $4,920 USDSave up to $15,956 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
18.45ct Emerald
$4,920 USD