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Heart|Natural|IGI

1.05ct J SI1 Heart Natural Diamond

VG • J/SI1 • IGI 737519431

Shape and cutting style on the report: Heart brilliant

Certificate IGI 737519431

Diamond specifications and retailer prices

From $1,870 AUD
As of November 2, 2026
Save $2,806 AUD (60%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $4,676 AUD at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

About this 1.05ct natural heart diamond

This 1.05ct 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 737519431. Listed at 6 retailers as of November 2, 2026, with prices from $1,870 to $4,676, a $2,806 spread on the same certified stone. NZ Jewellers lists it at $4,676. 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

1.05
Carat
J
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37°
Pavilion angle41.1°
OriginNatural
Grading LabIGI
CertificateIGI 737519431
Dimensions6.25 × 7.03 × 4.17 mm
L/W Ratio1.12
Girdle conditionFaceted
Culet sizePointed
Top View
6.25 mm7.03 mm1.05 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 737519431
Side View
Table 61.0%Crown 37°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 59.3%

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 2
Current: $4,676 AUD|Low: $1,869 AUD|High: $4,689 AUD|Avg: $2,634 AUD|-0.3%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 2$1,870 AUD
Retailer 6$1,917 AUD
Retailer 4$1,921 AUD
Retailer 5$2,006 AUD
Retailer 7$2,340 AUD
Retailer 8$2,390 AUD
Retailer 3$3,512 AUD
NZ Jewellers$4,676 AUD

29 data points across 8 retailers

6 retailers$1,870 AUD to $4,676 AUD

A
Cheapest Retailer
-
$1,870 AUD
A
Retailer 2
-
$1,917 AUD
View
A
Retailer 3
-
$1,921 AUD
View
B+
Retailer 4
-
$2,006 AUD
View
B
Retailer 5
-
$3,512 AUD
View
Most Expensive
C
NZ Jewellers
dc0f2369-1832-434f-b89e-09916d04dbdd · Nov 3
$4,676 AUD
$3,213 USD
View
5 more retailers have this diamond
Prices start from $1,870 AUDSave up to $2,806 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
1.05ct Heart
$1,870 AUD