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Marquise|Natural|GIA

1.21ct J SI1 Marquise Natural Diamond

GD • J/SI1 • GIA 2554338825

Certificate GIA 2554338825

Diamond specifications and retailer prices

From $3,613 CAD
$2,586 USD
As of October 31, 2026
Save $3,259 CAD (47%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $6,872 CAD at Helzberg Diamonds · As of November 1, 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 SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2554338825. Listed at 14 retailers as of October 31, 2026, with prices from $3,613 to $6,872, a $3,259 spread on the same certified stone. Helzberg Diamonds lists it at $6,872. 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
J
Color
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.87°
Pavilion angle39.78°
OriginNatural
Grading LabGIA
CertificateGIA 2554338825
Dimensions9.83 × 5.39 × 3.60 mm
L/W Ratio1.82
Culet sizeNone
Top View
9.83 mm5.39 mm1.21 ctJ / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2554338825
Side View
Table 59.0%Crown 43.87°Girdle: STK-VTKPavilion 39.78°Culet: NoneDepth 66.6%

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: Oct 31
Current: $6,872 CAD|Low: $3,613 CAD|High: $7,300 CAD|Avg: $4,971 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
Retailer 12
Retailer 13
November 2, 2026
Retailer 8$3,613 CAD
Retailer 12$3,681 CAD
Retailer 10$3,909 CAD
Retailer 9$3,929 CAD
Retailer 7$4,227 CAD
Retailer 4$4,354 CAD
Retailer 2$4,630 CAD
Retailer 13$4,662 CAD
Retailer 3$4,798 CAD
Retailer 6$4,826 CAD
Retailer 11$6,094 CAD
Retailer 5$6,480 CAD
Helzberg Diamonds$6,872 CAD

43 data points across 13 retailers

14 retailers$3,613 CAD to $6,872 CAD

B+
Cheapest Retailer
-
$3,613 CAD
$2,586 USD
B+
Retailer 2
-
$3,681 CAD
SGD 3,560 SGD
View
B+
Retailer 3
-
$3,909 CAD
$2,797 USD
View
B+
Retailer 4
-
$3,929 CAD
$2,812 USD
View
B
Retailer 5
-
$4,227 CAD
£2,382 GBP
View
B
Retailer 6
-
$4,354 CAD
SGD 4,211 SGD
View
B
Retailer 7
-
$4,630 CAD
$3,313 USD
View
B
Retailer 8
-
$4,662 CAD
$3,336 USD
View
B
Retailer 9
-
$4,798 CAD
$3,433 USD
View
B
Retailer 10
-
$4,826 CAD
€3,289 EUR
View
B
Retailer 11
-
$5,123 CAD
$3,666 USD
View
B
Retailer 12
-
$6,094 CAD
$4,361 USD
View
B
Retailer 13
-
$6,480 CAD
$4,637 USD
View
Most Expensive
C
Helzberg Diamonds
XZRILLKJJOOIL · Nov 1
$6,872 CAD
$4,918 USD
View
13 more retailers have this diamond
Prices start from $3,613 CADSave up to $3,259 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
$3,613 CAD