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Heart|Natural|IGI

1.51ct L SI1 Heart Natural Diamond

VG • L/SI1 • IGI 726562881

Shape and cutting style on the report: Heart brilliant

Certificate IGI 726562881

Diamond specifications and retailer prices

From $2,850 AUD
As of November 6, 2026
Save $4,126 AUD (59%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $6,976 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 L colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 726562881. Listed at 10 retailers as of November 5, 2026, with prices from $2,850 to $6,976, a $4,126 spread on the same certified stone. NZ Jewellers lists it at $6,976. 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
L
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.5°
Pavilion angle38.7°
OriginNatural
Grading LabIGI
CertificateIGI 726562881
Dimensions6.99 × 7.89 × 4.68 mm
L/W Ratio1.13
Girdle conditionFaceted
Top View
6.99 mm7.89 mm1.51 ctL / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 726562881
Side View
Table 54.0%Crown 35.5°Girdle: STK-THKPavilion 38.7°CuletDepth 59.3%

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: $6,976 AUD|Low: $2,850 AUD|High: $6,976 AUD|Avg: $3,866 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 2$2,850 AUD
Retailer 9$3,273 AUD
Retailer 3$3,280 AUD
Retailer 6$3,337 AUD
Retailer 8$3,340 AUD
Retailer 7$3,492 AUD
Retailer 4$3,851 AUD
Retailer 5$4,072 AUD
NZ Jewellers$6,976 AUD

45 data points across 9 retailers

10 retailers$2,850 AUD to $6,976 AUD

A
Cheapest Retailer
-
$2,850 AUD
B+
Retailer 2
-
$3,273 AUD
View
B+
Retailer 3
-
$3,280 AUD
View
B+
Retailer 4
-
$3,337 AUD
View
B+
Retailer 5
-
$3,340 AUD
View
B+
Retailer 6
-
$3,492 AUD
View
B+
Retailer 7
-
$3,540 AUD
View
B
Retailer 8
-
$3,851 AUD
View
B
Retailer 9
-
$4,072 AUD
View
Most Expensive
C
NZ Jewellers
fde8c355-18a0-49c2-a0c8-669b922cc5df · Nov 5
$6,976 AUD
$4,793 USD
View
9 more retailers have this diamond
Prices start from $2,850 AUDSave up to $4,126 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
$2,850 AUD