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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 $2,280 NZD
As of November 2, 2026
Save $3,420 NZD (60%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $5,700 NZD 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 $2,280 to $5,700, a $3,420 spread on the same certified stone. NZ Jewellers lists it at $5,700. 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: $5,700 NZD|Low: $2,278 NZD|High: $5,716 NZD|Avg: $3,211 NZD|-0.3%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 2$2,280 NZD
Retailer 6$2,336 NZD
Retailer 4$2,342 NZD
Retailer 5$2,445 NZD
Retailer 7$2,853 NZD
Retailer 8$2,913 NZD
Retailer 3$4,281 NZD
NZ Jewellers$5,700 NZD

29 data points across 8 retailers

6 retailers$2,280 NZD to $5,700 NZD

A
Cheapest Retailer
-
$2,280 NZD
A
Retailer 2
-
$2,336 NZD
View
A
Retailer 3
-
$2,342 NZD
View
B+
Retailer 4
-
$2,445 NZD
View
B
Retailer 5
-
$4,281 NZD
View
Most Expensive
C
NZ Jewellers
dc0f2369-1832-434f-b89e-09916d04dbdd · Nov 3
$5,700 NZD
$3,213 USD
View
5 more retailers have this diamond
Prices start from $2,280 NZDSave up to $3,420 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
1.05ct Heart
$2,280 NZD