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Heart|Natural|IGI

1.20ct I SI1 Heart Natural Diamond

VG • I/SI1 • IGI 749558736

Shape and cutting style on the report: Heart brilliant

Certificate IGI 749558736

Diamond specifications and retailer prices

From $2,792 NZD
As of October 31, 2026
Save $6,018 NZD (68%) vs most expensive(unlock to see where)
16 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 749558736. Listed at 16 retailers as of October 31, 2026, with prices from $2,792 to $8,810, a $6,018 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 angle32.6°
Pavilion angle38.4°
OriginNatural
Grading LabIGI
CertificateIGI 749558736
Dimensions6.70 × 7.35 × 4.11 mm
L/W Ratio1.10
Girdle conditionFaceted
Culet sizePointed
Top View
6.70 mm7.35 mm1.20 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 749558736
Side View
Table 62.0%Crown 32.6°Girdle: STK-THKPavilion 38.4°Culet: NoneDepth 55.9%

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: Oct 31
Current: $8,810 NZD|Low: $2,792 NZD|High: $8,810 NZD|Avg: $4,461 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
November 7, 2026
Retailer 9$2,792 NZD
Retailer 4$3,334 NZD
Retailer 6$3,503 NZD
Retailer 10$3,611 NZD
Retailer 12$3,611 NZD
Retailer 11$3,779 NZD
Retailer 5$3,978 NZD
Retailer 8$4,407 NZD
Retailer 7$4,732 NZD
Retailer 3$5,332 NZD
Retailer 2$6,292 NZD
NZ Jewellers$8,810 NZD

32 data points across 12 retailers

16 retailers$2,792 NZD to $8,810 NZD

A
Cheapest Retailer
-
$2,792 NZD
B+
Retailer 2
-
$3,261 NZD
View
B+
Retailer 3
-
$3,334 NZD
View
Final sale: no returns
A
Retailer 4
-
$3,503 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
-
$3,860 NZD
View
B+
Retailer 10
-
$3,978 NZD
View
Retailer 11
-
$4,167 NZD
View
Price last confirmed 29 days ago
B+
Retailer 12
-
$4,407 NZD
View
B
Retailer 13
-
$4,732 NZD
View
B
Retailer 14
-
$5,332 NZD
View
B
Retailer 15
-
$6,292 NZD
View
Most Expensive
C
NZ Jewellers
ede8d819-5314-4d83-b522-5ab9ddfebec2 · Nov 5
$8,810 NZD
$4,884 USD
View
15 more retailers have this diamond
Prices start from $2,792 NZDSave up to $6,018 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
$2,792 NZD