Marquise|Lab Grown|IGI

3.78ct E VVS1 Marquise Lab Grown Diamond

EX • E/VVS1 • IGI LG806630274

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG806630274

Diamond specifications and retailer prices

From $995 USD
As of October 30, 2026
Save $7,555 USD (88%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $8,550 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 LG806630274 or 806630274. Listed at 19 retailers as of October 30, 2026, with prices from $995 to $8,550, a $7,555 spread on the same certified stone. Brilliant Earth lists it at $8,550. 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 angle38°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG806630274
Dimensions15.71 × 8.02 × 5.10 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
15.71 mm8.02 mm3.78 ctE / VVS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG806630274
Side View
Table 62.0%Crown 38°Girdle: MED-THKPavilion 40.1°Culet: NoneDepth 63.6%

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 30
Current: $8,550 USD|Low: $995 USD|High: $8,550 USD|Avg: $2,444 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
October 30, 2026
Retailer 10$995 USD
Retailer 16$1,205 USD
Retailer 2$1,410 USD
Retailer 9$1,478 USD
Retailer 11$1,588 USD
Retailer 15$1,899 USD
Retailer 7$2,325 USD
Retailer 8$2,373 USD
Retailer 3$2,396 USD
Retailer 13$2,744 USD
Retailer 5$2,865 USD
Retailer 6$3,548 USD
Retailer 14$3,583 USD
Retailer 12$3,709 USD
Retailer 4$4,048 USD
Brilliant Earth$8,550 USD

17 data points across 16 retailers

19 retailers$995 USD to $8,550 USD

A
Cheapest Retailer
-
$995 USD
Final sale: no returns
A
Retailer 2
-
$1,205 USD
View
A
Retailer 3
-
$1,410 USD
View
A
Retailer 4
-
$1,478 USD
View
A
Retailer 5
-
$1,588 USD
£1,250 GBP
View
A
Retailer 6
-
$1,899 USD
€1,809 EUR
View
B+
Retailer 7
-
$2,325 USD
View
Retailer 8
-
$2,373 USD
A$3,651 AUD
View
Price last confirmed 9 days ago
B+
Retailer 9
-
$2,396 USD
ZAR 38,705 ZAR
View
B+
Retailer 10
-
$2,744 USD
View
B+
Retailer 11
-
$2,865 USD
£2,256 GBP
View
B
Retailer 12
-
$3,394 USD
View
B+
Retailer 13
-
$3,548 USD
£2,794 GBP
View
B+
Retailer 14
-
$3,583 USD
View
B+
Retailer 15
-
$3,709 USD
View
B
Retailer 16
-
$4,048 USD
SGD 5,470 SGD
View
Retailer 17
-
$4,619 USD
A$7,106 AUD
View
Price last confirmed 22 days ago
Retailer 18
-
$5,750 USD
View
Price last confirmed 23 days ago
Most Expensive
B
Brilliant Earth
20403422A · Oct 30
$8,550 USD
View
18 more retailers have this diamond
Prices start from $995 USDSave up to $7,555 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
$995 USD