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Heart|Natural|IGI

1.23ct K SI2 Heart Natural Diamond

VG • K/SI2 • IGI 762534888

Shape and cutting style on the report: Heart brilliant

Certificate IGI 762534888

Diamond specifications and retailer prices

From $1,902 AUD
As of November 6, 2026
Save $1,735 AUD (48%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $5,231 AUD at NZ Jewellers · As of September 30, 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 762534888. Listed at 10 retailers as of November 4, 2026, with a 91% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
K
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.5°
Pavilion angle38.8°
OriginNatural
Grading LabIGI
CertificateIGI 762534888
Dimensions6.38 × 7.44 × 4.39 mm
L/W Ratio1.17
Girdle conditionFaceted
Culet sizePointed
Top View
6.38 mm7.44 mm1.23 ctK / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 762534888
Side View
Table 61.0%Crown 35.5°Girdle: STK-THKPavilion 38.8°Culet: NoneDepth 59.0%

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: $1,902 AUD|Low: $1,902 AUD|High: $3,802 AUD|Avg: $2,384 AUD|-4.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 1$1,902 AUD
Retailer 8$1,908 AUD
Retailer 6$2,145 AUD
Retailer 5$2,170 AUD
Retailer 4$2,185 AUD
Retailer 2$2,247 AUD
Retailer 7$2,551 AUD
Retailer 3$3,637 AUD

12 data points across 8 retailers

10 retailers$1,902 AUD to $3,637 AUD

A
Cheapest Retailer
-
$1,902 AUD
Retailer 2
-
$2,144 AUD
View
Price last confirmed 37 days ago
B+
Retailer 3
-
$2,170 AUD
View
B+
Retailer 4
-
$2,185 AUD
View
Retailer 5
-
$2,244 AUD
View
Price last confirmed 37 days ago
B+
Retailer 6
-
$2,247 AUD
View
Retailer 7
-
$2,474 AUD
View
Price last confirmed 62 days ago
Retailer 8
-
$2,474 AUD
View
Price last confirmed 39 days ago
B
Retailer 9
-
$3,637 AUD
View
Most Expensive
NZ Jewellers
e59dba1f-eac7-4779-a68e-5f506d9aeab4 · Sep 30
$5,231 AUD
$3,594 USD
View
Price last confirmed 37 days ago
9 more retailers have this diamond
Prices start from $1,902 AUDSave up to $1,735 AUD

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
$1,902 AUD