Marquise|Lab Grown|IGI

3.78ct E VVS1 Marquise Lab Grown Diamond

EX • E/VVS1 • IGI LG814604097

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG814604097

Diamond specifications and retailer prices

From $2,371 USD
A$3,648 AUD
As of October 29, 2026
2 retailers carry this diamond
Most expensive: $9,620 USD at Brilliant Earth · As of October 21, 2026
View at Brilliant Earth

About this 3.78ct lab-grown marquise diamond

This 3.78ct lab-grown marquise sits in the three to five carat band, graded E colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG814604097 or 814604097. Listed at 2 retailers as of October 29, 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
E
Color
VVS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG814604097
Dimensions16.85 × 8.08 × 4.96 mm
L/W Ratio2.09
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.85 mm8.08 mm3.78 ctE / VVS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG814604097
Side View
Table 61.0%Crown 34.8°Girdle: THN-MEDPavilion 40.1°Culet: NoneDepth 61.4%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 29
Current: $9,620 USD|Low: $798 USD|High: $9,920 USD|Avg: $3,610 USD|-3.0%
Brilliant Earth
Retailer 2
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October 26, 2026
Retailer 13$798 USD
Retailer 16$1,230 USD
Retailer 5$1,469 USD
Retailer 15$1,610 USD
Retailer 11$1,728 USD
Retailer 9$2,145 USD
Retailer 7$2,269 USD
Retailer 2$2,371 USD
Retailer 4$2,805 USD
Retailer 14$2,880 USD
Retailer 17$3,258 USD
Retailer 3$3,651 USD
Retailer 12$3,918 USD
Retailer 8$4,738 USD
Retailer 18$5,523 USD
Retailer 6$5,873 USD
Retailer 10$9,021 USD
Brilliant Earth$9,620 USD

9 data points across 18 retailers

2 retailers

B+
Cheapest Retailer
-
$2,371 USD
A$3,648 AUD
Most Expensive
Brilliant Earth
20514865A · Oct 21
$9,620 USD
View
Price last confirmed 9 days ago
1 more retailer has this diamond
Prices start from $2,371 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+
3.78ct Marquise
$2,371 USD