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Radiant|Natural|GIA

1.21ct J SI2 Radiant Natural Diamond

EX • J/SI2 • GIA 1555663793

Certificate GIA 1555663793

Diamond specifications and retailer prices

From $2,372 CAD
$1,698 USD
As of October 28, 2026
Save $1,879 CAD (44%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $4,251 CAD at Helzberg Diamonds · As of October 28, 2026
View at Helzberg Diamonds

About this 1.21ct natural radiant diamond

This 1.21ct natural radiant 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 1555663793. Listed at 10 retailers as of October 28, 2026, with prices from $2,372 to $4,251, a $1,879 spread on the same certified stone. Helzberg Diamonds lists it at $4,251. 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
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1555663793
Dimensions7.41 × 5.28 × 3.45 mm
L/W Ratio1.40
Culet sizeNone
Top View
7.41 mm5.28 mm1.21 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1555663793
Side View
Table 68.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 65.4%

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: Oct 28
Current: $4,251 CAD|Low: $2,372 CAD|High: $4,607 CAD|Avg: $3,284 CAD|-7.7%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 4$2,372 CAD
Retailer 5$2,372 CAD
Retailer 9$2,582 CAD
Retailer 6$2,607 CAD
Retailer 7$2,845 CAD
Retailer 3$2,975 CAD
Retailer 8$3,102 CAD
Retailer 2$3,341 CAD
Retailer 10$3,904 CAD
Helzberg Diamonds$4,251 CAD

37 data points across 10 retailers

10 retailers$2,372 CAD to $4,251 CAD

A
Cheapest Retailer
-
$2,372 CAD
$1,698 USD
A
Retailer 2
-
$2,372 CAD
$1,698 USD
View
A
Retailer 3
-
$2,582 CAD
SGD 2,498 SGD
View
A
Retailer 4
-
$2,607 CAD
£1,469 GBP
View
B+
Retailer 5
-
$2,845 CAD
$2,037 USD
View
B+
Retailer 6
-
$2,975 CAD
$2,130 USD
View
B+
Retailer 7
-
$3,102 CAD
$2,221 USD
View
B+
Retailer 8
-
$3,341 CAD
€2,278 EUR
View
B+
Retailer 9
-
$3,904 CAD
$2,795 USD
View
Most Expensive
B
Helzberg Diamonds
XZRHLLLMMJNPJ · Oct 28
$4,251 CAD
$3,043 USD
View
9 more retailers have this diamond
Prices start from $2,372 CADSave up to $1,879 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 Radiant
$2,372 CAD