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Marquise|Lab Grown|IGI

3.78ct G VS1 Marquise Lab Grown Diamond

EX • G/VS1 • IGI LG622488122

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG622488122

Diamond specifications and retailer prices

From $1,521 CAD
$1,089 USD
As of October 30, 2026
1 retailer carries this diamond
Only listing: $1,521 CAD at B2C Jewels
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at B2C Jewels

About this 3.78ct lab-grown marquise diamond

This 3.78ct lab-grown marquise sits in the three to five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG622488122 or 622488122. Listed at a single retailer as of October 30, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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
G
Color
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG622488122
Dimensions17.50 × 7.97 × 4.87 mm
L/W Ratio2.20
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
17.50 mm7.97 mm3.78 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG622488122
Side View
Table 62.0%Crown 35.4°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 61.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 30
Current: $1,521 CAD|Low: $1,456 CAD|High: $10,253 CAD|Avg: $3,542 CAD|+4.5%
B2C Jewels
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
September 23, 2026
B2C Jewels$1,521 CAD
Retailer 3$1,613 CAD
Retailer 2$1,905 CAD
Retailer 5$2,380 CAD
Retailer 7$3,040 CAD
Retailer 4$3,642 CAD
Retailer 9$4,258 CAD
Retailer 8$4,685 CAD
Retailer 6$10,253 CAD

22 data points across 9 retailers

1 retailer

B+
B2C Jewels
27135578 · Oct 30
$1,521 CAD
$1,089 USD
View

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B+
3.78ct Marquise
$1,521 CAD