CaratHunter
Plans
Round|Natural|IGI

1.23ct J VS1 Round Natural Diamond

EX • J/VS1 • IGI 654416413

Shape and cutting style on the report: Round brilliant

Certificate IGI 654416413

Diamond specifications and retailer prices

From $3,850 NZD
As of November 5, 2026
Save $1,432 NZD (27%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $9,238 NZD at NZ Jewellers · As of October 17, 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 VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI 654416413. Listed at 17 retailers as of November 5, 2026, with a 37% 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
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle40.8°
OriginNatural
Grading LabIGI
CertificateIGI 654416413
Dimensions6.88 × 6.93 × 4.17 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
6.88 mm6.93 mm1.23 ctJ / VS1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 654416413
Side View
Table 60.0%Crown 33.6°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 60.4%

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 5
Current: $4,685 NZD|Low: $3,319 NZD|High: $7,834 NZD|Avg: $4,834 NZD|+3.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 7$3,850 NZD
Retailer 10$3,983 NZD
Retailer 8$3,994 NZD
Retailer 6$4,257 NZD
Retailer 2$4,315 NZD
Retailer 1$4,685 NZD
Retailer 4$4,890 NZD
Retailer 5$5,202 NZD
Retailer 3$5,282 NZD
Retailer 9$7,782 NZD

30 data points across 10 retailers

17 retailers$3,850 NZD to $5,282 NZD

A
Cheapest Retailer
-
$3,850 NZD
A
Retailer 2
-
$3,994 NZD
View
A
Retailer 3
-
$4,257 NZD
View
Retailer 4
-
$4,315 NZD
View
Price last confirmed 56 days ago
Retailer 5
-
$4,315 NZD
View
Price last confirmed 44 days ago
Retailer 6
-
$4,418 NZD
View
Price last confirmed 21 days ago
Retailer 7
-
$4,418 NZD
View
Price last confirmed 19 days ago
A
Retailer 8
-
$4,685 NZD
View
B+
Retailer 9
-
$4,890 NZD
View
Retailer 10
-
$4,979 NZD
View
Price last confirmed 60 days ago
Retailer 11
-
$4,979 NZD
View
Price last confirmed 45 days ago
B+
Retailer 12
-
$5,202 NZD
View
B+
Retailer 13
-
$5,282 NZD
View
Retailer 14
-
$7,782 NZD
View
Price last confirmed 16 days ago
Retailer 15
-
$9,020 NZD
View
Price last confirmed 57 days ago
Retailer 16
-
$9,020 NZD
View
Price last confirmed 46 days ago
Most Expensive
NZ Jewellers
419cd0ef-59bd-4bf4-b2be-aa5af84a668b · Oct 17
$9,238 NZD
$5,121 USD
View
Price last confirmed 20 days ago
16 more retailers have this diamond
Prices start from $3,850 NZDSave up to $1,432 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
$3,850 NZD