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1.23ct J SI2 Round Natural Diamond

VG • J/SI2 • HRD 220000154301

Shape and cutting style on the report: Brilliant

Certificate HRD 220000154301

Diamond specifications and retailer prices

From $2,476 AUD
As of November 5, 2026
Save $4,154 AUD (63%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $6,629 AUD 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 very-good cut grade and certified by HRD 220000154301. Listed at 11 retailers as of November 5, 2026, with prices from $2,476 to $6,629, a $4,154 spread on the same certified stone. NZ Jewellers lists it at $6,629. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.23
Carat
J
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceStrong
Crown angle36.6°
Pavilion angle40.9°
OriginNatural
Grading LabHRD
CertificateHRD 220000154301
Dimensions6.67 × 6.74 × 4.31 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
6.67 mm6.74 mm1.23 ctJ / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceStrong
CertificateHRD 220000154301
Side View
Table 57.0%Crown 36.6°Girdle: MediumPavilion 40.9°Culet: NoneDepth 64.0%

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 5
Current: $6,629 AUD|Low: $2,476 AUD|High: $6,629 AUD|Avg: $3,300 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 5, 2026
Retailer 10$2,476 AUD
Retailer 11$2,508 AUD
Retailer 7$2,644 AUD
Retailer 5$2,717 AUD
Retailer 8$2,719 AUD
Retailer 3$2,736 AUD
Retailer 6$2,844 AUD
Retailer 9$3,136 AUD
Retailer 2$3,682 AUD
Retailer 4$4,748 AUD
NZ Jewellers$6,629 AUD

20 data points across 11 retailers

11 retailers$2,476 AUD to $6,629 AUD

B+
Cheapest Retailer
-
$2,476 AUD
B+
Retailer 2
-
$2,508 AUD
View
Final sale: no returns
B+
Retailer 3
-
$2,644 AUD
View
Retailer 4
-
$2,717 AUD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$2,719 AUD
View
B+
Retailer 6
-
$2,736 AUD
View
B+
Retailer 7
-
$2,844 AUD
View
B+
Retailer 8
-
$3,136 AUD
View
B
Retailer 9
-
$3,682 AUD
View
B
Retailer 10
-
$4,748 AUD
View
Most Expensive
C
NZ Jewellers
5b8088a0-7d8e-4b3c-b1ca-b7368b401de1 · Nov 5
$6,629 AUD
$4,555 USD
View
10 more retailers have this diamond
Prices start from $2,476 AUDSave up to $4,154 AUD

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
$2,476 AUD