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Round|Natural|GIA

1.23ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 5553650322

Certificate GIA 5553650322

Diamond specifications and retailer prices

From $3,110 CAD
As of November 6, 2026
Save $5,584 CAD (64%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $8,694 CAD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.23ct natural round diamond

This 1.23ct natural round sits in the classic one-carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5553650322. Listed at 16 retailers as of November 5, 2026, with prices from $3,110 to $8,694, a $5,584 spread on the same certified stone. NZ Jewellers lists it at $8,694. 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

1.23
Carat
J
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 5553650322
Dimensions6.81 × 6.85 × 4.25 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Crystal
Top View
6.81 mm6.85 mm1.23 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5553650322
Side View
Table 56.0%Crown 35.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.3%

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 6
Current: $8,694 CAD|Low: $2,912 CAD|High: $8,694 CAD|Avg: $4,531 CAD
NZ Jewellers
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 6, 2026
Retailer 8$3,110 CAD
Retailer 3$3,329 CAD
Retailer 4$3,373 CAD
Retailer 10$3,476 CAD
Retailer 5$3,767 CAD
Retailer 12$3,912 CAD
Retailer 9$4,302 CAD
Retailer 13$4,302 CAD
Retailer 2$4,376 CAD
Retailer 11$4,441 CAD
Retailer 7$4,848 CAD
Retailer 6$6,934 CAD
NZ Jewellers$8,694 CAD

43 data points across 13 retailers

16 retailers$3,110 CAD to $8,694 CAD

B+
Cheapest Retailer
-
$3,110 CAD
B+
Retailer 2
-
$3,373 CAD
View
B+
Retailer 3
-
$3,476 CAD
View
Final sale: no returns
B+
Retailer 4
-
$3,538 CAD
View
Retailer 5
-
$3,767 CAD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
$3,767 CAD
View
B
Retailer 7
-
$3,912 CAD
View
B+
Retailer 8
-
$4,302 CAD
View
B+
Retailer 9
-
$4,302 CAD
View
B+
Retailer 10
-
$4,346 CAD
View
B+
Retailer 11
-
$4,376 CAD
View
B
Retailer 12
-
$4,441 CAD
View
Retailer 13
-
$4,827 CAD
View
Price last confirmed 14 days ago
B
Retailer 14
-
$4,848 CAD
View
B
Retailer 15
-
$6,934 CAD
View
Most Expensive
B
NZ Jewellers
cf5b448f-3b88-4520-b6d7-a4918f74acfe · Nov 5
$8,694 CAD
$6,225 USD
View
15 more retailers have this diamond
Prices start from $3,110 CADSave up to $5,584 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+
1.23ct Round
$3,110 CAD