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Round|Natural|GIA

1.23ct J IF Round Natural Diamond

EX • J/IF • GIA 7556302642

Certificate GIA 7556302642

Diamond specifications and retailer prices

From $6,329 AUD
£3,500 GBP
As of November 1, 2026
Save $4,924 AUD (44%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $12,308 AUD at NZ Jewellers · As of October 3, 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 7556302642. Listed at 7 retailers as of November 1, 2026, with a 78% 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
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 7556302642
Dimensions6.78 × 6.83 × 4.27 mm
L/W Ratio1.01
Star length50%
Top View
6.78 mm6.83 mm1.23 ctJ / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7556302642
Side View
Table 57.0%Crown 35.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.8%

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 1
Current: $7,589 AUD|Low: $5,163 AUD|High: $11,388 AUD|Avg: $7,631 AUD|+4.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 2, 2026
Retailer 2$6,329 AUD
Retailer 6$6,492 AUD
Retailer 5$6,522 AUD
Retailer 1$7,589 AUD
Retailer 4$7,829 AUD
Retailer 3$11,253 AUD

40 data points across 6 retailers

7 retailers$6,329 AUD to $11,253 AUD

B+
Cheapest Retailer
-
$6,329 AUD
£3,500 GBP
B+
Retailer 2
-
$6,492 AUD
$4,560 USD
View
B
Retailer 3
-
$6,522 AUD
$4,581 USD
View
Final sale: no returns
B+
Retailer 4
-
$7,589 AUD
€5,077 EUR
View
B
Retailer 5
-
$7,829 AUD
£4,330 GBP
View
B
Retailer 6
-
$11,253 AUD
£6,224 GBP
View
Most Expensive
NZ Jewellers
0c331be8-f492-4e14-92be-86c71bb00789 · Oct 3
$12,308 AUD
$8,646 USD
View
Price last confirmed 29 days ago
6 more retailers have this diamond
Prices start from $6,329 AUDSave up to $4,924 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
$6,329 AUD