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Marquise|Natural|GIA

1.20ct D SI2 Marquise Natural Diamond

EX • D/SI2 • GIA 3555937032

Certificate GIA 3555937032

Diamond specifications and retailer prices

From $5,121 CAD
As of November 4, 2026
Save $4,056 CAD (44%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $9,177 CAD at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

About this 1.2ct natural marquise diamond

This 1.2ct natural marquise sits in the classic one-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 3555937032. Listed at 11 retailers as of November 4, 2026, with prices from $5,121 to $9,177, a $4,056 spread on the same certified stone. Helzberg Diamonds lists it at $9,177. 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

1.20
Carat
D
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle38.76°
Pavilion angle40.92°
OriginNatural
Grading LabGIA
CertificateGIA 3555937032
Dimensions10.44 × 5.50 × 3.54 mm
L/W Ratio1.90
Culet sizeNone
Top View
10.44 mm5.50 mm1.20 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 3555937032
Side View
Table 57.0%Crown 38.76°Girdle: THN-THKPavilion 40.92°Culet: NoneDepth 64.3%

Caratlytics Score

How it works →
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 4
Current: $9,177 CAD|Low: $5,121 CAD|High: $9,750 CAD|Avg: $6,594 CAD|-5.9%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 7$5,121 CAD
Retailer 6$5,165 CAD
Retailer 5$5,246 CAD
Retailer 8$5,473 CAD
Retailer 11$5,591 CAD
Retailer 4$5,874 CAD
Retailer 9$6,487 CAD
Retailer 10$6,536 CAD
Retailer 2$6,584 CAD
Retailer 3$9,169 CAD
Helzberg Diamonds$9,177 CAD

42 data points across 11 retailers

11 retailers$5,121 CAD to $9,177 CAD

A
Cheapest Retailer
-
$5,121 CAD
A
Retailer 2
-
$5,165 CAD
View
A
Retailer 3
-
$5,246 CAD
View
A
Retailer 4
-
$5,473 CAD
View
A
Retailer 5
-
$5,591 CAD
View
A
Retailer 6
-
$5,874 CAD
View
B+
Retailer 7
-
$6,487 CAD
View
B+
Retailer 8
-
$6,536 CAD
View
B+
Retailer 9
-
$6,584 CAD
View
B
Retailer 10
-
$9,169 CAD
View
Most Expensive
B
Helzberg Diamonds
XZRJLLLPJNGJI · Nov 6
$9,177 CAD
$6,571 USD
View
10 more retailers have this diamond
Prices start from $5,121 CADSave up to $4,056 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
1.20ct Marquise
$5,121 CAD