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Round|Natural|IGI

1.23ct J VS1 Round Natural Diamond

EX • J/VS1 • IGI 642405058

Shape and cutting style on the report: Round brilliant

Certificate IGI 642405058

Diamond specifications and retailer prices

From $2,835 CAD
As of November 4, 2026
Save $2,648 CAD (48%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $6,815 CAD at NZ Jewellers · As of October 17, 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 VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI 642405058. Listed at 15 retailers as of November 4, 2026, with a 93% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
J
Color
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle41.1°
OriginNatural
Grading LabIGI
CertificateIGI 642405058
Dimensions6.86 × 6.89 × 4.26 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
6.86 mm6.89 mm1.23 ctJ / VS1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 642405058
Side View
Table 56.0%Crown 34.1°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 62.0%

Caratlytics Score

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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 4
Current: $3,450 CAD|Low: $2,835 CAD|High: $5,779 CAD|Avg: $3,735 CAD|+1.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 5$2,835 CAD
Retailer 8$2,958 CAD
Retailer 7$3,149 CAD
Retailer 1$3,450 CAD
Retailer 3$3,600 CAD
Retailer 4$3,831 CAD
Retailer 2$3,890 CAD
Retailer 6$5,483 CAD

29 data points across 8 retailers

15 retailers$2,835 CAD to $5,483 CAD

A
Cheapest Retailer
-
$2,835 CAD
A
Retailer 2
-
$2,958 CAD
View
Retailer 3
-
$3,102 CAD
View
Price last confirmed 102 days ago
A
Retailer 4
-
$3,149 CAD
View
Retailer 5
-
$3,179 CAD
View
Price last confirmed 44 days ago
Retailer 6
-
$3,260 CAD
View
Price last confirmed 21 days ago
Retailer 7
-
$3,260 CAD
View
Price last confirmed 19 days ago
A
Retailer 8
-
$3,450 CAD
View
A
Retailer 9
-
$3,600 CAD
View
Retailer 10
-
$3,669 CAD
View
Price last confirmed 45 days ago
B+
Retailer 11
-
$3,831 CAD
View
B+
Retailer 12
-
$3,890 CAD
View
B
Retailer 13
-
$5,483 CAD
View
Retailer 14
-
$6,646 CAD
View
Price last confirmed 46 days ago
Most Expensive
NZ Jewellers
7282c147-c874-492c-8544-55902c3b9aac · Oct 17
$6,815 CAD
$4,880 USD
View
Price last confirmed 19 days ago
14 more retailers have this diamond
Prices start from $2,835 CADSave up to $2,648 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
1.23ct Round
$2,835 CAD