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Marquise|Natural|GIA

1.21ct I SI2 Marquise Natural Diamond

GD • I/SI2 • GIA 6551273825

Certificate GIA 6551273825

Diamond specifications and retailer prices

From $3,664 CAD
As of November 5, 2026
Save $3,004 CAD (45%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $6,669 CAD at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

About this 1.21ct natural marquise diamond

This 1.21ct natural marquise sits in the classic one-carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6551273825. Listed at 12 retailers as of November 5, 2026, with prices from $3,664 to $6,669, a $3,004 spread on the same certified stone. Helzberg Diamonds lists it at $6,669. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.21
Carat
I
Color
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.52°
Pavilion angle37.98°
OriginNatural
Grading LabGIA
CertificateGIA 6551273825
Dimensions9.85 × 5.41 × 3.52 mm
L/W Ratio1.82
Culet sizeNone
Top View
9.85 mm5.41 mm1.21 ctI / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551273825
Side View
Table 60.0%Crown 43.52°Girdle: MED-VTKPavilion 37.98°Culet: NoneDepth 65.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $6,669 CAD|Low: $3,577 CAD|High: $7,229 CAD|Avg: $4,913 CAD|-7.7%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 7$3,664 CAD
Retailer 4$3,813 CAD
Retailer 8$3,878 CAD
Retailer 2$4,133 CAD
Retailer 3$4,223 CAD
Retailer 5$4,273 CAD
Retailer 10$4,533 CAD
Retailer 6$4,661 CAD
Retailer 11$4,677 CAD
Retailer 9$6,290 CAD
Helzberg Diamonds$6,669 CAD

44 data points across 11 retailers

12 retailers$3,664 CAD to $6,669 CAD

A
Cheapest Retailer
-
$3,664 CAD
A
Retailer 2
-
$3,813 CAD
View
B+
Retailer 3
-
$3,878 CAD
View
B+
Retailer 4
-
$4,133 CAD
View
B+
Retailer 5
-
$4,223 CAD
View
B+
Retailer 6
-
$4,273 CAD
View
B+
Retailer 7
-
$4,533 CAD
View
B+
Retailer 8
-
$4,661 CAD
View
B+
Retailer 9
-
$4,677 CAD
View
B
Retailer 10
-
$5,074 CAD
View
B
Retailer 11
-
$6,290 CAD
View
Most Expensive
B
Helzberg Diamonds
XZRMLLHINJOIL · Nov 6
$6,669 CAD
$4,741 USD
View
11 more retailers have this diamond
Prices start from $3,664 CADSave up to $3,004 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
1.21ct Marquise
$3,664 CAD