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Marquise|Natural|GIA

1.51ct D SI2 Marquise Natural Diamond

EX • D/SI2 • GIA 2245057622

Certificate GIA 2245057622

Diamond specifications and retailer prices

From $10,086 CAD
As of November 3, 2026
Save $6,188 CAD (38%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $16,275 CAD at Helzberg Diamonds · As of November 3, 2026
View at Helzberg Diamonds

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2245057622. Listed at 12 retailers as of November 3, 2026, with prices from $10,086 to $16,275, a $6,188 spread on the same certified stone. Helzberg Diamonds lists it at $16,275. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
D
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.37°
Pavilion angle41.86°
OriginNatural
Grading LabGIA
CertificateGIA 2245057622
Dimensions11.44 × 6.05 × 3.87 mm
L/W Ratio1.89
Culet sizeNone
Top View
11.44 mm6.05 mm1.51 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2245057622
Side View
Table 58.0%Crown 36.37°Girdle: STK-THKPavilion 41.86°Culet: NoneDepth 64.1%

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: Nov 3
Current: $16,275 CAD|Low: $10,086 CAD|High: $17,529 CAD|Avg: $12,665 CAD|-7.2%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 9$10,086 CAD
Retailer 11$10,312 CAD
Retailer 12$10,705 CAD
Retailer 5$10,772 CAD
Retailer 3$10,891 CAD
Retailer 4$11,040 CAD
Retailer 10$11,055 CAD
Retailer 8$12,521 CAD
Retailer 7$12,854 CAD
Retailer 6$14,041 CAD
Retailer 2$14,867 CAD
Helzberg Diamonds$16,275 CAD

39 data points across 12 retailers

12 retailers$10,086 CAD to $16,275 CAD

A
Cheapest Retailer
-
$10,086 CAD
A
Retailer 2
-
$10,312 CAD
View
A
Retailer 3
-
$10,705 CAD
View
A
Retailer 4
-
$10,772 CAD
View
A
Retailer 5
-
$10,891 CAD
View
A
Retailer 6
-
$11,040 CAD
View
A
Retailer 7
-
$11,055 CAD
View
A
Retailer 8
-
$12,521 CAD
View
A
Retailer 9
-
$12,854 CAD
View
B+
Retailer 10
-
$14,041 CAD
View
B+
Retailer 11
-
$14,867 CAD
View
Most Expensive
B+
Helzberg Diamonds
XZRIIKLGLNMII · Nov 3
$16,275 CAD
$11,653 USD
View
11 more retailers have this diamond
Prices start from $10,086 CADSave up to $6,188 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.

A
1.51ct Marquise
$10,086 CAD