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Heart|Natural|IGI

1.23ct J SI2 Heart Natural Diamond

VG • J/SI2 • IGI 734534502

Shape and cutting style on the report: Heart brilliant

Certificate IGI 734534502

Diamond specifications and retailer prices

From $1,208 USD
As of November 1, 2026
Save $1,737 USD (59%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $2,945 USD at NZ Jewellers · As of November 3, 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 SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 734534502. Listed at 5 retailers as of November 1, 2026, with prices from $1,208 to $2,945, a $1,737 spread on the same certified stone. NZ Jewellers lists it at $2,945. 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
Color
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.2°
Pavilion angle42.5°
OriginNatural
Grading LabIGI
CertificateIGI 734534502
Dimensions6.41 × 7.54 × 4.48 mm
L/W Ratio1.18
Girdle conditionFaceted
Culet sizePointed
Top View
6.41 mm7.54 mm1.23 ctJ / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 734534502
Side View
Table 60.0%Crown 32.2°Girdle: MED-THKPavilion 42.5°Culet: NoneDepth 59.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $2,945 USD|Low: $1,208 USD|High: $3,059 USD|Avg: $1,781 USD|-3.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 2, 2026
Retailer 5$1,208 USD
Retailer 2$1,209 USD
Retailer 3$1,254 USD
Retailer 6$1,561 USD
Retailer 4$2,223 USD
NZ Jewellers$2,945 USD

27 data points across 6 retailers

5 retailers$1,208 USD to $2,945 USD

A
Cheapest Retailer
-
$1,208 USD
A
Retailer 2
-
$1,209 USD
View
A
Retailer 3
-
$1,254 USD
View
Retailer 4
-
$2,223 USD
View
Price last confirmed 9 days ago
Most Expensive
B
NZ Jewellers
8e06775a-6f75-4528-b58d-a54a1aa91233 · Nov 3
$2,945 USD
View
4 more retailers have this diamond
Prices start from $1,208 USDSave up to $1,737 USD

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
$1,208 USD