Marquise|Lab Grown|IGI

3.78ct E VVS1 Marquise Lab Grown Diamond

ID • E/VVS1 • IGI LG846643459

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG846643459

Diamond specifications and retailer prices

From $927 USD
As of October 27, 2026
Save $4,903 USD (84%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $5,830 USD at Brilliant Earth · As of October 30, 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 LG846643459 or 846643459. Listed at 22 retailers as of October 27, 2026, with prices from $927 to $5,830, a $4,903 spread on the same certified stone. Brilliant Earth lists it at $5,830. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG846643459
Dimensions15.75 × 8.05 × 5.14 mm
L/W Ratio1.96
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.75 mm8.05 mm3.78 ctE / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG846643459
Side View
Table 60.0%Crown 36.4°Girdle: STK-THKPavilion 41.4°Culet: NoneDepth 63.9%

Caratlytics Score

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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 27
Current: $5,830 USD|Low: $927 USD|High: $5,830 USD|Avg: $2,347 USD
Brilliant Earth
Retailer 2
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Retailer 22
October 30, 2026
Retailer 8$927 USD
Retailer 14$1,024 USD
Retailer 19$1,038 USD
Retailer 11$1,091 USD
Retailer 13$1,243 USD
Retailer 6$1,250 USD
Retailer 9$1,456 USD
Retailer 2$1,530 USD
Retailer 7$1,631 USD
Retailer 16$1,642 USD
Retailer 10$2,406 USD
Retailer 20$2,496 USD
Retailer 15$2,530 USD
Retailer 5$2,756 USD
Retailer 21$2,972 USD
Retailer 12$3,069 USD
Retailer 3$3,192 USD
Retailer 17$3,588 USD
Retailer 22$3,665 USD
Retailer 18$3,714 USD
Retailer 4$3,868 USD
Brilliant Earth$5,830 USD

11 data points across 22 retailers

22 retailers$927 USD to $5,830 USD

A
Cheapest Retailer
-
$927 USD
A
Retailer 2
-
$1,024 USD
View
A
Retailer 3
-
$1,038 USD
View
Final sale: no returns
A
Retailer 4
-
$1,091 USD
View
A
Retailer 5
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$1,243 USD
£979 GBP
View
A
Retailer 6
-
$1,250 USD
View
A
Retailer 7
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$1,456 USD
View
A
Retailer 8
-
$1,530 USD
View
A
Retailer 9
-
$1,631 USD
€1,553 EUR
View
A
Retailer 10
-
$1,642 USD
£1,293 GBP
View
B+
Retailer 11
-
$2,406 USD
View
B+
Retailer 12
-
$2,496 USD
ZAR 40,318 ZAR
View
Retailer 13
-
$2,530 USD
A$3,892 AUD
View
Price last confirmed 9 days ago
B+
Retailer 14
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$2,756 USD
View
B+
Retailer 15
-
$2,972 USD
£2,340 GBP
View
B+
Retailer 16
-
$3,069 USD
View
B+
Retailer 17
-
$3,192 USD
View
B+
Retailer 18
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$3,588 USD
SGD 4,849 SGD
View
B+
Retailer 19
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$3,665 USD
£2,886 GBP
View
B+
Retailer 20
-
$3,714 USD
View
B+
Retailer 21
-
$3,868 USD
View
Most Expensive
B
Brilliant Earth
22283113A · Oct 30
$5,830 USD
View
21 more retailers have this diamond
Prices start from $927 USDSave up to $4,903 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
3.78ct Marquise
$927 USD