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Heart|Natural|IGI

1.20ct I SI1 Heart Natural Diamond

VG • I/SI1 • IGI 743513531

Shape and cutting style on the report: Heart brilliant

Certificate IGI 743513531

Diamond specifications and retailer prices

From $3,261 NZD
As of November 6, 2026
Save $5,549 NZD (63%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $8,810 NZD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.2ct natural heart diamond

This 1.2ct natural heart sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 743513531. Listed at 14 retailers as of November 5, 2026, with prices from $3,261 to $8,810, a $5,549 spread on the same certified stone. NZ Jewellers lists it at $8,810. 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

1.20
Carat
I
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38°
Pavilion angle37.4°
OriginNatural
Grading LabIGI
CertificateIGI 743513531
Dimensions6.81 × 7.47 × 4.11 mm
L/W Ratio1.10
Girdle conditionFaceted
Culet sizePointed
Top View
6.81 mm7.47 mm1.20 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 743513531
Side View
Table 57.0%Crown 38°Girdle: STK-THKPavilion 37.4°Culet: NoneDepth 55.0%

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: $8,810 NZD|Low: $3,261 NZD|High: $8,810 NZD|Avg: $4,393 NZD
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
November 7, 2026
Retailer 4$3,261 NZD
Retailer 5$3,334 NZD
Retailer 7$3,503 NZD
Retailer 6$3,586 NZD
Retailer 11$3,611 NZD
Retailer 13$3,611 NZD
Retailer 3$3,680 NZD
Retailer 12$3,779 NZD
Retailer 2$3,978 NZD
Retailer 14$4,167 NZD
Retailer 9$4,407 NZD
Retailer 8$4,907 NZD
Retailer 10$6,310 NZD
NZ Jewellers$8,810 NZD

31 data points across 14 retailers

14 retailers$3,261 NZD to $8,810 NZD

A
Cheapest Retailer
-
$3,261 NZD
B+
Retailer 2
-
$3,334 NZD
View
Final sale: no returns
A
Retailer 3
-
$3,503 NZD
View
A
Retailer 4
-
$3,586 NZD
View
B+
Retailer 5
-
$3,611 NZD
View
Retailer 6
-
$3,611 NZD
View
Price last confirmed 9 days ago
B+
Retailer 7
-
$3,680 NZD
View
B+
Retailer 8
-
$3,779 NZD
View
B+
Retailer 9
-
$3,978 NZD
View
B+
Retailer 10
-
$4,167 NZD
View
B+
Retailer 11
-
$4,407 NZD
View
B
Retailer 12
-
$4,907 NZD
View
B
Retailer 13
-
$6,310 NZD
View
Most Expensive
C
NZ Jewellers
045ecf2b-a6fe-4461-baf6-c2eeecaa63b2 · Nov 5
$8,810 NZD
$4,884 USD
View
13 more retailers have this diamond
Prices start from $3,261 NZDSave up to $5,549 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
1.20ct Heart
$3,261 NZD