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Marquise|Natural|GIA

1.21ct J SI2 Marquise Natural Diamond

EX • J/SI2 • GIA 2567109603

Certificate GIA 2567109603

Diamond specifications and retailer prices

From $3,570 CAD
As of November 6, 2026
Save $3,168 CAD (47%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $6,738 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 J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2567109603. Listed at 12 retailers as of November 6, 2026, with prices from $3,570 to $6,738, a $3,168 spread on the same certified stone. Helzberg Diamonds lists it at $6,738. 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

1.21
Carat
J
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle39.5°
Pavilion angle40.3°
OriginNatural
Grading LabGIA
CertificateGIA 2567109603
Dimensions10.51 × 5.54 × 3.55 mm
L/W Ratio1.90
Culet sizeNone
Top View
10.51 mm5.54 mm1.21 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2567109603
Side View
Table 58.0%Crown 39.5°Girdle: MED-THKPavilion 40.3°Culet: NoneDepth 64.0%

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 6
Current: $6,738 CAD|Low: $3,570 CAD|High: $7,013 CAD|Avg: $4,730 CAD|-3.9%
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 2$3,570 CAD
Retailer 8$3,628 CAD
Retailer 10$3,853 CAD
Retailer 9$3,919 CAD
Retailer 7$4,162 CAD
Retailer 3$4,265 CAD
Retailer 11$4,577 CAD
Retailer 6$4,709 CAD
Retailer 12$4,719 CAD
Retailer 5$4,916 CAD
Retailer 4$6,331 CAD
Helzberg Diamonds$6,738 CAD

33 data points across 12 retailers

12 retailers$3,570 CAD to $6,738 CAD

A
Cheapest Retailer
-
$3,570 CAD
B+
Retailer 2
-
$3,628 CAD
View
B+
Retailer 3
-
$3,853 CAD
View
B+
Retailer 4
-
$3,919 CAD
View
B+
Retailer 5
-
$4,162 CAD
View
B+
Retailer 6
-
$4,265 CAD
View
B
Retailer 7
-
$4,577 CAD
View
B
Retailer 8
-
$4,709 CAD
View
B
Retailer 9
-
$4,719 CAD
View
B+
Retailer 10
-
$4,916 CAD
View
B
Retailer 11
-
$6,331 CAD
View
Most Expensive
B
Helzberg Diamonds
XZRILMNHGPMGJ · Nov 6
$6,738 CAD
$4,790 USD
View
11 more retailers have this diamond
Prices start from $3,570 CADSave up to $3,168 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
$3,570 CAD