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Heart|Natural|IGI

1.51ct I IF Heart Natural Diamond

VG • I/IF • IGI 660478809

Shape and cutting style on the report: Heart brilliant

Certificate IGI 660478809

Diamond specifications and retailer prices

From $8,705 AUD
As of November 6, 2026
Save $8,041 AUD (48%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $16,746 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct natural heart diamond

This 1.51ct natural heart sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI 660478809. Listed at 15 retailers as of November 5, 2026, with prices from $8,705 to $16,746, a $8,041 spread on the same certified stone. NZ Jewellers lists it at $16,746. 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

1.51
Carat
I
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle35.6°
OriginNatural
Grading LabIGI
CertificateIGI 660478809
Dimensions6.85 × 7.86 × 4.50 mm
L/W Ratio1.15
Girdle conditionFaceted
Culet sizePointed
Top View
6.85 mm7.86 mm1.51 ctI / IF
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 660478809
Side View
Table 55.0%Crown 35.4°Girdle: STK-THKPavilion 35.6°Culet: NoneDepth 57.3%

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: $16,746 AUD|Low: $8,847 AUD|High: $16,746 AUD|Avg: $11,250 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 2$8,855 AUD
Retailer 10$9,240 AUD
Retailer 6$9,242 AUD
Retailer 4$9,703 AUD
Retailer 9$10,012 AUD
Retailer 7$10,166 AUD
Retailer 8$11,553 AUD
Retailer 3$12,215 AUD
Retailer 5$14,710 AUD
NZ Jewellers$16,746 AUD

42 data points across 10 retailers

15 retailers$8,705 AUD to $16,746 AUD

A
Cheapest Retailer
-
$8,705 AUD
A
Retailer 2
-
$8,732 AUD
View
A
Retailer 3
-
$8,855 AUD
View
B+
Retailer 4
-
$9,240 AUD
View
Final sale: no returns
Retailer 5
-
$9,242 AUD
View
Price last confirmed 9 days ago
Retailer 6
-
$9,242 AUD
View
Price last confirmed 22 days ago
A
Retailer 7
-
$9,278 AUD
View
B+
Retailer 8
-
$9,703 AUD
View
B+
Retailer 9
-
$10,012 AUD
View
B+
Retailer 10
-
$10,166 AUD
View
B+
Retailer 11
-
$10,245 AUD
View
B
Retailer 12
-
$11,553 AUD
View
B
Retailer 13
-
$12,215 AUD
View
B
Retailer 14
-
$14,710 AUD
View
Most Expensive
B
NZ Jewellers
ed8f324f-6620-4211-b1a8-36de590750c6 · Nov 5
$16,746 AUD
$11,506 USD
View
14 more retailers have this diamond
Prices start from $8,705 AUDSave up to $8,041 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
1.51ct Heart
$8,705 AUD