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Heart|Natural|IGI

1.23ct J SI1 Heart Natural Diamond

VG • J/SI1 • IGI 704515160

Shape and cutting style on the report: Heart brilliant

Certificate IGI 704515160

Diamond specifications and retailer prices

From $2,482 NZD
As of November 6, 2026
Save $4,183 NZD (63%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $6,665 NZD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.23ct natural heart diamond

This 1.23ct natural heart sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 704515160. Listed at 15 retailers as of November 5, 2026, with prices from $2,482 to $6,665, a $4,183 spread on the same certified stone. NZ Jewellers lists it at $6,665. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.23
Carat
J
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle41.1°
OriginNatural
Grading LabIGI
CertificateIGI 704515160
Dimensions6.52 × 7.39 × 4.43 mm
L/W Ratio1.13
Girdle conditionFaceted
Culet sizePointed
Top View
6.52 mm7.39 mm1.23 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 704515160
Side View
Table 58.0%Crown 35.2°Girdle: STK-THKPavilion 41.1°Culet: NoneDepth 59.9%

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 6
Current: $6,665 NZD|Low: $2,482 NZD|High: $6,866 NZD|Avg: $3,459 NZD|-2.9%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 7, 2026
Retailer 11$2,482 NZD
Retailer 12$2,495 NZD
Retailer 10$2,534 NZD
Retailer 13$2,610 NZD
Retailer 4$2,733 NZD
Retailer 2$2,816 NZD
Retailer 7$2,816 NZD
Retailer 5$2,843 NZD
Retailer 6$2,852 NZD
Retailer 14$2,935 NZD
Retailer 9$3,014 NZD
Retailer 15$3,106 NZD
Retailer 3$3,334 NZD
Retailer 8$4,688 NZD
NZ Jewellers$6,665 NZD

31 data points across 15 retailers

15 retailers$2,482 NZD to $6,665 NZD

A
Cheapest Retailer
-
$2,482 NZD
Final sale: no returns
A
Retailer 2
-
$2,495 NZD
View
A
Retailer 3
-
$2,534 NZD
View
A
Retailer 4
-
$2,610 NZD
View
A
Retailer 5
-
$2,733 NZD
View
A
Retailer 6
-
$2,816 NZD
View
Retailer 7
-
$2,816 NZD
View
Price last confirmed 9 days ago
B+
Retailer 8
-
$2,843 NZD
View
B+
Retailer 9
-
$2,852 NZD
View
B+
Retailer 10
-
$2,935 NZD
View
A
Retailer 11
-
$3,014 NZD
View
B+
Retailer 12
-
$3,106 NZD
View
B+
Retailer 13
-
$3,334 NZD
View
B
Retailer 14
-
$4,688 NZD
View
Most Expensive
B
NZ Jewellers
8ef5a5f5-41e0-40cf-9bc2-8ee8a1456da3 · Nov 5
$6,665 NZD
$3,695 USD
View
14 more retailers have this diamond
Prices start from $2,482 NZDSave up to $4,183 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 Heart
$2,482 NZD