Round|Natural|GIA

1.23ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 1246042751

Certificate GIA 1246042751

Diamond specifications and retailer prices

From $2,704 CAD
As of October 30, 2026
11 retailers carry this diamond
Most expensive: $6,139 CAD at NZ Jewellers · As of October 23, 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 1246042751. Listed at 11 retailers as of October 30, 2026. 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
PolishVery Good
SymmetryExcellent
FluorescenceMedium
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 1246042751
Dimensions6.85 × 6.88 × 4.28 mm
L/W Ratio1.00
Key to symbols
Twinning Wisp, Cloud, Crystal, Feather
Top View
6.85 mm6.88 mm1.23 ctJ / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1246042751
Side View
Table 59.0%CrownGirdle: THN-STKPavilion 41.8°Culet: NoneDepth 62.3%

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 30
Current: $6,139 CAD|Low: $2,091 CAD|High: $6,392 CAD|Avg: $3,688 CAD|-4.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 29, 2026
Retailer 10$2,091 CAD
Retailer 3$2,704 CAD
Retailer 5$2,783 CAD
Retailer 8$2,877 CAD
Retailer 11$2,937 CAD
Retailer 7$3,010 CAD
Retailer 4$3,170 CAD
Retailer 2$3,881 CAD
Retailer 9$4,399 CAD
Retailer 6$5,067 CAD
NZ Jewellers$6,139 CAD

37 data points across 11 retailers

11 retailers

Retailer 1
-
$2,091 CAD
Price last confirmed 8 days ago
A
Retailer 2
-
$2,704 CAD
View
Retailer 3
-
$2,783 CAD
View
Price last confirmed 8 days ago
Retailer 4
-
$2,877 CAD
View
Price last confirmed 9 days ago
Retailer 5
-
$2,937 CAD
View
Price last confirmed 12 days ago
Retailer 6
-
$3,010 CAD
View
Price last confirmed 8 days ago
Retailer 7
-
$3,170 CAD
View
Price last confirmed 8 days ago
Retailer 8
-
$3,881 CAD
View
Price last confirmed 8 days ago
Retailer 9
-
$4,399 CAD
View
Price last confirmed 9 days ago
Retailer 10
-
$5,067 CAD
View
Price last confirmed 8 days ago
Most Expensive
NZ Jewellers
d65ba1e6-ba27-432e-9ef9-e3be631436f9 · Oct 23
$6,139 CAD
$4,396 USD
View
Price last confirmed 13 days ago
10 more retailers have this diamond
Prices start from $2,704 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
$2,704 CAD