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Heart|Natural|IGI

1.20ct G SI1 Heart Natural Diamond

VG • G/SI1 • IGI 800626000

Shape and cutting style on the report: Heart brilliant

Certificate IGI 800626000

Diamond specifications and retailer prices

From $3,866 NZD
As of November 6, 2026
Save $5,080 NZD (57%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $8,946 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 800626000. Listed at 13 retailers as of November 5, 2026, with prices from $3,866 to $8,946, a $5,080 spread on the same certified stone. NZ Jewellers lists it at $8,946. 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
G
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.6°
Pavilion angle38.8°
OriginNatural
Grading LabIGI
CertificateIGI 800626000
Dimensions6.35 × 7.38 × 4.30 mm
L/W Ratio1.16
Girdle conditionFaceted
Culet sizeNone
Top View
6.35 mm7.38 mm1.20 ctG / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 800626000
Side View
Table 62.0%Crown 36.6°Girdle: STK-THKPavilion 38.8°Culet: NoneDepth 58.3%

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 6
Current: $8,946 NZD|Low: $3,866 NZD|High: $9,205 NZD|Avg: $5,011 NZD|-2.8%
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
November 7, 2026
Retailer 3$3,866 NZD
Retailer 4$3,949 NZD
Retailer 8$4,151 NZD
Retailer 5$4,158 NZD
Retailer 13$4,266 NZD
Retailer 10$4,279 NZD
Retailer 11$4,279 NZD
Retailer 6$4,477 NZD
Retailer 7$4,593 NZD
Retailer 12$4,937 NZD
Retailer 9$5,222 NZD
Retailer 2$7,456 NZD
NZ Jewellers$8,946 NZD

30 data points across 13 retailers

13 retailers$3,866 NZD to $8,946 NZD

A
Cheapest Retailer
-
$3,866 NZD
A
Retailer 2
-
$3,949 NZD
View
Final sale: no returns
B+
Retailer 3
-
$4,151 NZD
View
B+
Retailer 4
-
$4,158 NZD
View
B+
Retailer 5
-
$4,266 NZD
View
B+
Retailer 6
-
$4,279 NZD
View
Retailer 7
-
$4,279 NZD
View
Price last confirmed 9 days ago
B+
Retailer 8
-
$4,477 NZD
View
B+
Retailer 9
-
$4,593 NZD
View
B+
Retailer 10
-
$4,937 NZD
View
B+
Retailer 11
-
$5,222 NZD
View
B
Retailer 12
-
$7,456 NZD
View
Most Expensive
B
NZ Jewellers
b104df6b-e2fb-4ddc-95b5-384121951bcc · Nov 5
$8,946 NZD
$4,959 USD
View
12 more retailers have this diamond
Prices start from $3,866 NZDSave up to $5,080 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
$3,866 NZD