Radiant|Natural|GIA

1.21ct J SI1 Radiant Natural Diamond

EX • J/SI1 • GIA 2558197624

Certificate GIA 2558197624

Diamond specifications and retailer prices

From $2,251 CAD
As of November 6, 2026
Save $3,019 CAD (57%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $5,270 CAD at MOH London · As of November 2, 2026
View at MOH London

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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2558197624. Listed at 14 retailers as of November 2, 2026, with prices from $2,251 to $5,270, a $3,019 spread on the same certified stone. MOH London lists it at $5,270. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2558197624
Dimensions7.23 × 5.56 × 3.78 mm
L/W Ratio1.30
Top View
7.23 mm5.56 mm1.21 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2558197624
Side View
Table 68.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 68.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $5,270 CAD|Low: $2,251 CAD|High: $5,365 CAD|Avg: $3,314 CAD|-1.8%
MOH London
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 11$2,251 CAD
Retailer 5$2,364 CAD
Retailer 8$2,799 CAD
Retailer 3$3,026 CAD
Retailer 6$3,137 CAD
Retailer 10$3,151 CAD
Retailer 12$3,201 CAD
Retailer 2$3,266 CAD
Retailer 4$3,469 CAD
Retailer 9$3,670 CAD
Retailer 7$4,086 CAD
MOH London$5,270 CAD

30 data points across 12 retailers

14 retailers$2,251 CAD to $5,270 CAD

A
Cheapest Retailer
-
$2,251 CAD
A
Retailer 2
-
$2,364 CAD
View
B+
Retailer 3
-
$2,799 CAD
View
B+
Retailer 4
-
$2,851 CAD
View
Retailer 5
-
$3,026 CAD
View
Price last confirmed 9 days ago
B+
Retailer 6
-
$3,137 CAD
View
B+
Retailer 7
-
$3,151 CAD
View
B+
Retailer 8
-
$3,161 CAD
View
B+
Retailer 9
-
$3,201 CAD
View
B+
Retailer 10
-
$3,266 CAD
View
B
Retailer 11
-
$3,670 CAD
View
Retailer 12
-
$3,742 CAD
View
Price last confirmed 32 days ago
B
Retailer 13
-
$4,086 CAD
View
Most Expensive
B
MOH London
599C3FF43 · Nov 2
$5,270 CAD
£2,950 GBP
View
13 more retailers have this diamond
Prices start from $2,251 CADSave up to $3,019 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
$2,251 CAD