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Marquise|Natural|GIA

1.21ct H SI2 Marquise Natural Diamond

VG • H/SI2 • GIA 6551370295

Certificate GIA 6551370295

Diamond specifications and retailer prices

From $4,536 CAD
As of November 4, 2026
Save $3,595 CAD (44%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $8,132 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 6551370295. Listed at 12 retailers as of November 4, 2026, with prices from $4,536 to $8,132, a $3,595 spread on the same certified stone. Helzberg Diamonds lists it at $8,132. 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
H
Color
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle40.97°
Pavilion angle39.32°
OriginNatural
Grading LabGIA
CertificateGIA 6551370295
Dimensions10.12 × 5.47 × 3.54 mm
L/W Ratio1.85
Culet sizeNone
Top View
10.12 mm5.47 mm1.21 ctH / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6551370295
Side View
Table 60.0%Crown 40.97°Girdle: MED-VTKPavilion 39.32°Culet: NoneDepth 64.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $8,132 CAD|Low: $4,536 CAD|High: $8,466 CAD|Avg: $5,839 CAD|-2.0%
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 7, 2026
Retailer 10$4,536 CAD
Retailer 9$4,621 CAD
Retailer 12$4,849 CAD
Retailer 8$4,902 CAD
Retailer 4$4,951 CAD
Retailer 2$5,238 CAD
Retailer 11$5,785 CAD
Retailer 3$5,867 CAD
Retailer 6$6,033 CAD
Retailer 5$6,293 CAD
Retailer 7$8,099 CAD
Helzberg Diamonds$8,132 CAD

41 data points across 12 retailers

12 retailers$4,536 CAD to $8,132 CAD

B+
Cheapest Retailer
-
$4,536 CAD
B+
Retailer 2
-
$4,849 CAD
View
B+
Retailer 3
-
$4,902 CAD
View
B+
Retailer 4
-
$4,951 CAD
View
B+
Retailer 5
-
$5,238 CAD
View
B
Retailer 6
-
$5,785 CAD
View
B
Retailer 7
-
$5,867 CAD
View
B
Retailer 8
-
$6,023 CAD
View
B
Retailer 9
-
$6,033 CAD
View
B
Retailer 10
-
$6,293 CAD
View
B
Retailer 11
-
$8,099 CAD
View
Most Expensive
B
Helzberg Diamonds
XZRMLLHJNGIPL · Nov 6
$8,132 CAD
$5,781 USD
View
11 more retailers have this diamond
Prices start from $4,536 CADSave up to $3,595 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.

B+
1.21ct Marquise
$4,536 CAD