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Marquise|Natural|GIA

1.21ct H SI2 Marquise Natural Diamond

EX • H/SI2 • GIA 2245015530

Certificate GIA 2245015530

Diamond specifications and retailer prices

From $3,830 CAD
As of November 4, 2026
Save $3,453 CAD (47%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $7,283 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 H 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 2245015530. Listed at 12 retailers as of November 4, 2026, with prices from $3,830 to $7,283, a $3,453 spread on the same certified stone. Helzberg Diamonds lists it at $7,283. 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
H
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle39.86°
Pavilion angle37.96°
OriginNatural
Grading LabGIA
CertificateGIA 2245015530
Dimensions10.63 × 5.56 × 3.40 mm
L/W Ratio1.91
Culet sizeNone
Top View
10.63 mm5.56 mm1.21 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2245015530
Side View
Table 58.0%Crown 39.86°Girdle: MED-THKPavilion 37.96°Culet: NoneDepth 61.1%

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 4
Current: $7,283 CAD|Low: $3,830 CAD|High: $7,977 CAD|Avg: $5,100 CAD|-8.7%
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 8$3,830 CAD
Retailer 7$3,868 CAD
Retailer 5$3,923 CAD
Retailer 9$4,130 CAD
Retailer 4$4,472 CAD
Retailer 3$4,614 CAD
Retailer 11$4,929 CAD
Retailer 10$5,051 CAD
Retailer 2$5,095 CAD
Retailer 6$6,874 CAD
Helzberg Diamonds$7,283 CAD

38 data points across 11 retailers

12 retailers$3,830 CAD to $7,283 CAD

A
Cheapest Retailer
-
$3,830 CAD
A
Retailer 2
-
$3,868 CAD
View
A
Retailer 3
-
$3,923 CAD
View
A
Retailer 4
-
$4,130 CAD
View
A
Retailer 5
-
$4,472 CAD
View
B+
Retailer 6
-
$4,614 CAD
View
B+
Retailer 7
-
$4,929 CAD
View
B+
Retailer 8
-
$5,051 CAD
View
B+
Retailer 9
-
$5,095 CAD
View
B
Retailer 10
-
$5,541 CAD
View
B
Retailer 11
-
$6,874 CAD
View
Most Expensive
B
Helzberg Diamonds
XZRIIKLGHLLJG · Nov 6
$7,283 CAD
$5,178 USD
View
11 more retailers have this diamond
Prices start from $3,830 CADSave up to $3,453 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
$3,830 CAD