Radiant|Natural|GIA

1.23ct J SI1 Radiant Natural Diamond

ID • J/SI1 • GIA 2556124890

Certificate GIA 2556124890

Diamond specifications and retailer prices

From $2,557 CAD
As of November 4, 2026
Save $2,283 CAD (47%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $6,757 CAD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.23ct natural radiant diamond

This 1.23ct 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 2556124890. Listed at 12 retailers as of November 4, 2026, with a 89% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2556124890
Dimensions6.82 × 5.25 × 3.70 mm
L/W Ratio1.30
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle, Extra Facet
Top View
6.82 mm5.25 mm1.23 ctJ / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556124890
Side View
Table 68.0%CrownGirdlePavilionCulet: NoneDepth 70.4%

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: Nov 4
Current: $3,381 CAD|Low: $2,343 CAD|High: $4,912 CAD|Avg: $3,280 CAD|+2.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 6$2,557 CAD
Retailer 5$2,666 CAD
Retailer 8$2,771 CAD
Retailer 9$2,771 CAD
Retailer 2$3,009 CAD
Retailer 1$3,381 CAD
Retailer 7$3,615 CAD
Retailer 4$3,767 CAD
Retailer 3$4,840 CAD

44 data points across 9 retailers

12 retailers$2,557 CAD to $4,840 CAD

A
Cheapest Retailer
-
$2,557 CAD
Final sale: no returns
A
Retailer 2
-
$2,666 CAD
View
Retailer 3
-
$2,771 CAD
View
Price last confirmed 30 days ago
Retailer 4
-
$2,771 CAD
View
Price last confirmed 30 days ago
Retailer 5
-
$2,899 CAD
View
Price last confirmed 38 days ago
B+
Retailer 6
-
$3,009 CAD
View
Retailer 7
-
$3,197 CAD
View
Price last confirmed 39 days ago
B+
Retailer 8
-
$3,381 CAD
View
Retailer 9
-
$3,615 CAD
View
Price last confirmed 33 days ago
B
Retailer 10
-
$3,767 CAD
View
B
Retailer 11
-
$4,840 CAD
View
Most Expensive
NZ Jewellers
052bd83d-df8d-4648-80e9-b4cec5a37c13 · Sep 30
$6,757 CAD
$4,804 USD
View
Price last confirmed 37 days ago
11 more retailers have this diamond
Prices start from $2,557 CADSave up to $2,283 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 Radiant
$2,557 CAD