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Round|Natural|IGI

1.23ct J VS1 Round Natural Diamond

EX • J/VS1 • IGI 613369271

Shape and cutting style on the report: Round brilliant

Certificate IGI 613369271

Diamond specifications and retailer prices

From $3,850 NZD
As of November 4, 2026
Save $3,597 NZD (48%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $9,238 NZD at NZ Jewellers · As of October 20, 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 613369271. Listed at 15 retailers as of November 4, 2026, with a 93% 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 angle35.6°
Pavilion angle40.6°
OriginNatural
Grading LabIGI
CertificateIGI 613369271
Dimensions6.87 × 6.84 × 4.24 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
6.87 mm6.84 mm1.23 ctJ / VS1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 613369271
Side View
Table 57.0%Crown 35.6°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.9%

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 4
Current: $9,238 NZD|Low: $3,850 NZD|High: $9,238 NZD|Avg: $5,348 NZD|+2.4%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 6$3,850 NZD
Retailer 9$3,994 NZD
Retailer 8$4,257 NZD
Retailer 10$4,315 NZD
Retailer 2$4,685 NZD
Retailer 3$4,890 NZD
Retailer 5$5,202 NZD
Retailer 4$5,282 NZD
Retailer 7$7,446 NZD
NZ Jewellers$9,238 NZD

29 data points across 10 retailers

15 retailers$3,850 NZD to $7,446 NZD

A
Cheapest Retailer
-
$3,850 NZD
A
Retailer 2
-
$3,994 NZD
View
Retailer 3
-
$4,198 NZD
View
Price last confirmed 102 days ago
A
Retailer 4
-
$4,257 NZD
View
Retailer 5
-
$4,315 NZD
View
Price last confirmed 44 days ago
Retailer 6
-
$4,315 NZD
View
Price last confirmed 15 days ago
Retailer 7
-
$4,418 NZD
View
Price last confirmed 21 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 45 days ago
B+
Retailer 11
-
$5,202 NZD
View
B+
Retailer 12
-
$5,282 NZD
View
B
Retailer 13
-
$7,446 NZD
View
Retailer 14
-
$9,020 NZD
View
Price last confirmed 46 days ago
Most Expensive
NZ Jewellers
a4acdb90-10ba-4c17-92fa-a52541d8be25 · Oct 20
$9,238 NZD
$5,121 USD
View
Price last confirmed 17 days ago
14 more retailers have this diamond
Prices start from $3,850 NZDSave up to $3,597 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