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Heart|Natural|IGI

1.20ct H SI1 Heart Natural Diamond

VG • H/SI1 • IGI 828653750

Shape and cutting style on the report: Heart brilliant

Certificate IGI 828653750

Diamond specifications and retailer prices

From $3,027 AUD
As of November 6, 2026
Save $4,119 AUD (58%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $7,146 AUD 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 828653750. Listed at 15 retailers as of November 5, 2026, with prices from $3,027 to $7,146, a $4,119 spread on the same certified stone. NZ Jewellers lists it at $7,146. 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
H
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle42°
OriginNatural
Grading LabIGI
CertificateIGI 828653750
Dimensions6.15 × 7.24 × 4.55 mm
L/W Ratio1.18
Girdle conditionFaceted
Culet sizeNone
Top View
6.15 mm7.24 mm1.20 ctH / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 828653750
Side View
Table 61.0%Crown 35.5°Girdle: STK-THKPavilion 42°Culet: NoneDepth 62.8%

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: $7,146 AUD|Low: $3,027 AUD|High: $7,292 AUD|Avg: $3,960 AUD|-2.0%
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
Retailer 15
November 7, 2026
Retailer 12$3,027 AUD
Retailer 10$3,093 AUD
Retailer 11$3,093 AUD
Retailer 13$3,250 AUD
Retailer 5$3,343 AUD
Retailer 4$3,419 AUD
Retailer 7$3,487 AUD
Retailer 8$3,506 AUD
Retailer 14$3,553 AUD
Retailer 6$3,596 AUD
Retailer 9$3,692 AUD
Retailer 15$3,867 AUD
Retailer 3$4,171 AUD
Retailer 2$5,838 AUD
NZ Jewellers$7,146 AUD

15 data points across 15 retailers

15 retailers$3,027 AUD to $7,146 AUD

A
Cheapest Retailer
-
$3,027 AUD
B+
Retailer 2
-
$3,093 AUD
View
Final sale: no returns
B+
Retailer 3
-
$3,093 AUD
View
B+
Retailer 4
-
$3,250 AUD
View
B+
Retailer 5
-
$3,343 AUD
View
B+
Retailer 6
-
$3,419 AUD
View
Retailer 7
-
$3,487 AUD
View
Price last confirmed 9 days ago
B+
Retailer 8
-
$3,506 AUD
View
B+
Retailer 9
-
$3,553 AUD
View
B+
Retailer 10
-
$3,596 AUD
View
B+
Retailer 11
-
$3,692 AUD
View
B+
Retailer 12
-
$3,867 AUD
View
B
Retailer 13
-
$4,171 AUD
View
B
Retailer 14
-
$5,838 AUD
View
Most Expensive
B
NZ Jewellers
05724fd7-2c60-418b-ab97-b3717312dcc7 · Nov 5
$7,146 AUD
$4,910 USD
View
14 more retailers have this diamond
Prices start from $3,027 AUDSave up to $4,119 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
1.20ct Heart
$3,027 AUD