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Marquise|Lab Grown|IGI

3.51ct G VS1 Marquise Lab Grown Diamond

ID • G/VS1

Diamond specifications and retailer prices

From $3,446 CAD
$2,467 USD
As of October 26, 2026
10 retailers carry this diamond
Most expensive: $5,501 CAD at Helzberg Diamonds · As of September 27, 2026
View at Helzberg Diamonds

About this 3.51ct lab-grown marquise diamond

This 3.51ct 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. Listed at 10 retailers as of October 26, 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

3.51
Carat
G
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions15.32 × 7.91 × 4.99 mm
L/W Ratio1.94
Top View
15.32 mm7.91 mm3.51 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 60.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 63.1%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 26
Current: $5,501 CAD|Low: $739 CAD|High: $6,769 CAD|Avg: $3,090 CAD|-18.7%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 24, 2026
Retailer 5$739 CAD
Retailer 2$828 CAD
Retailer 4$916 CAD
Retailer 6$1,439 CAD
Retailer 3$2,662 CAD
Retailer 7$3,446 CAD
Retailer 8$3,695 CAD
Helzberg Diamonds$5,501 CAD

9 data points across 8 retailers

10 retailers

Retailer 1
-
$739 CAD
$529 USD
Price last confirmed 25 days ago
Retailer 2
-
$739 CAD
$529 USD
View
Price last confirmed 9 days ago
Retailer 3
-
$828 CAD
$593 USD
View
Price last confirmed 8 days ago
Retailer 4
-
$916 CAD
$656 USD
View
Price last confirmed 24 days ago
Retailer 5
-
$916 CAD
$656 USD
View
Price last confirmed 7 days ago
Retailer 6
-
$1,439 CAD
$1,030 USD
View
Price last confirmed 8 days ago
Retailer 7
-
$2,662 CAD
$1,906 USD
View
Price last confirmed 25 days ago
Retailer 8
-
$2,662 CAD
$1,906 USD
View
Price last confirmed 7 days ago
B
Retailer 9
-
$3,446 CAD
$2,467 USD
View
Most Expensive
Helzberg Diamonds
ZXZOHOMLJHGL · Sep 27
$5,501 CAD
$3,938 USD
View
Price last confirmed 36 days ago
9 more retailers have this diamond
Prices start from $3,446 CAD

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
3.51ct Marquise
$3,446 CAD