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Marquise|Lab Grown|IGI

3.78ct F VS2 Marquise Lab Grown Diamond

EX • F/VS2 • IGI LG842647978

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG842647978

Diamond specifications and retailer prices

From $2,216 USD
As of November 3, 2026
2 retailers carry this diamond
Most expensive: $2,216 USD at Brilliance
View at Brilliance

About this 3.78ct lab-grown marquise diamond

This 3.78ct lab-grown marquise sits in the three to five carat band, graded F colour (colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG842647978 or 842647978. Listed at 2 retailers as of November 3, 2026. 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

3.78
Carat
F
Color
VS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG842647978
Dimensions16.51 × 8.07 × 5.03 mm
L/W Ratio2.05
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.51 mm8.07 mm3.78 ctF / VS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG842647978
Side View
Table 60.0%Crown 35°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.3%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 3
Current: $2,216 USD|Low: $1,020 USD|High: $2,216 USD|Avg: $1,122 USD
Brilliance
Retailer 2
November 3, 2026
Retailer 2$1,020 USD
Brilliance$2,216 USD

12 data points across 2 retailers

2 retailers

Retailer 1
-
$1,020 USD
£803 GBP
Price last confirmed 14 days ago
Most Expensive
B
Brilliance
D46661205 · Nov 3
$2,216 USD
View
1 more retailer has this diamond

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
3.78ct Marquise
$2,216 USD