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Round|Natural|GIA

1.23ct J VS2 Round Natural Diamond

EX • J/VS2 • GIA 1558434257

Certificate GIA 1558434257

Diamond specifications and retailer prices

From $3,778 NZD
As of November 6, 2026
Save $4,874 NZD (56%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $11,049 NZD at NZ Jewellers · As of October 9, 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 VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by GIA 1558434257. Listed at 9 retailers as of November 4, 2026, with a 129% 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
VS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1558434257
Dimensions6.77 × 6.83 × 4.26 mm
L/W Ratio1.01
Key to symbols
Crystal, Feather, Needle
Top View
6.77 mm6.83 mm1.23 ctJ / VS2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1558434257
Side View
Table 57.0%CrownGirdle: Slightly ThickPavilion 40.6°Culet: NoneDepth 62.7%

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 6
Current: $11,049 NZD|Low: $3,778 NZD|High: $11,252 NZD|Avg: $6,308 NZD|-1.8%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 2$3,778 NZD
Retailer 7$4,675 NZD
Retailer 3$4,883 NZD
Retailer 4$5,269 NZD
Retailer 8$5,285 NZD
Retailer 9$5,589 NZD
Retailer 5$5,858 NZD
Retailer 10$6,717 NZD
Retailer 6$8,653 NZD
NZ Jewellers$11,049 NZD

32 data points across 10 retailers

9 retailers$3,778 NZD to $8,653 NZD

A
Cheapest Retailer
-
$3,778 NZD
A
Retailer 2
-
$4,675 NZD
View
A
Retailer 3
-
$4,883 NZD
View
B+
Retailer 4
-
$5,269 NZD
View
Retailer 5
-
$5,285 NZD
View
Price last confirmed 30 days ago
Retailer 6
-
$5,589 NZD
View
Price last confirmed 38 days ago
B+
Retailer 7
-
$5,858 NZD
View
B
Retailer 8
-
$8,653 NZD
View
Most Expensive
NZ Jewellers
b27948bc-0402-4d6f-9585-946ac0fff126 · Oct 9
$11,049 NZD
$6,211 USD
View
Price last confirmed 28 days ago
8 more retailers have this diamond
Prices start from $3,778 NZDSave up to $4,874 NZD

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
$3,778 NZD