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Round|Natural|GIA

1.23ct J IF Round Natural Diamond

EX • J/IF • GIA 1557801478

Certificate GIA 1557801478

Diamond specifications and retailer prices

From $5,717 AUD
As of November 2, 2026
9 retailers carry this diamond
Most expensive: $9,950 AUD at NZ Jewellers · As of October 6, 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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by GIA 1557801478. Listed at 9 retailers as of November 2, 2026. 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
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1557801478
Dimensions6.75 × 6.81 × 4.25 mm
L/W Ratio1.01
Top View
6.75 mm6.81 mm1.23 ctJ / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1557801478
Side View
Table 59.0%CrownGirdle: Slightly ThickPavilion 41°Culet: NoneDepth 62.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $9,950 AUD|Low: $4,191 AUD|High: $10,042 AUD|Avg: $6,116 AUD|-0.9%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 7, 2026
Retailer 8$4,191 AUD
Retailer 10$5,091 AUD
Retailer 4$5,164 AUD
Retailer 9$5,323 AUD
Retailer 5$5,710 AUD
Retailer 3$5,717 AUD
Retailer 11$5,764 AUD
Retailer 6$6,235 AUD
Retailer 2$6,314 AUD
Retailer 7$9,665 AUD
NZ Jewellers$9,950 AUD

16 data points across 11 retailers

9 retailers

Retailer 1
-
$4,191 AUD
HK$23,000 HKD
Price last confirmed 21 days ago
Retailer 2
-
$5,091 AUD
$3,576 USD
View
Price last confirmed 12 days ago
Retailer 3
-
$5,164 AUD
£2,856 GBP
View
Price last confirmed 26 days ago
Retailer 4
-
$5,323 AUD
SGD 5,053 SGD
View
Price last confirmed 25 days ago
Retailer 5
-
$5,710 AUD
$4,011 USD
View
Price last confirmed 26 days ago
B+
Retailer 6
-
$5,717 AUD
View
Retailer 7
-
$5,764 AUD
$4,049 USD
View
Price last confirmed 33 days ago
Retailer 8
-
$9,665 AUD
£5,346 GBP
View
Price last confirmed 27 days ago
Most Expensive
NZ Jewellers
f286b7d2-b21d-4d38-a1c6-0baaf2cd7af2 · Oct 6
$9,950 AUD
$6,989 USD
View
Price last confirmed 26 days ago
8 more retailers have this diamond
Prices start from $5,717 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
$5,717 AUD