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Heart|Natural|IGI

1.31ct I SI1 Heart Natural Diamond

VG • I/SI1 • IGI 762534772

Shape and cutting style on the report: Heart brilliant

Certificate IGI 762534772

Diamond specifications and retailer prices

From $3,295 AUD
As of November 6, 2026
Save $3,062 AUD (48%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $7,979 AUD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.31ct natural heart diamond

This 1.31ct natural heart sits in the one-and-a-quarter to one-and-a-half carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 762534772. Listed at 16 retailers as of November 6, 2026, with a 93% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.31
Carat
I
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle34.5°
Pavilion angle38.2°
OriginNatural
Grading LabIGI
CertificateIGI 762534772
Dimensions7.00 × 7.70 × 4.32 mm
L/W Ratio1.10
Girdle conditionFaceted
Culet sizePointed
Top View
7.00 mm7.70 mm1.31 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 762534772
Side View
Table 58.0%Crown 34.5°Girdle: STK-THKPavilion 38.2°Culet: NoneDepth 56.1%

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: $6,357 AUD|Low: $3,295 AUD|High: $6,766 AUD|Avg: $4,333 AUD|-4.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 6$3,295 AUD
Retailer 10$3,347 AUD
Retailer 5$3,368 AUD
Retailer 11$3,599 AUD
Retailer 3$3,816 AUD
Retailer 8$3,852 AUD
Retailer 2$3,898 AUD
Retailer 4$3,916 AUD
Retailer 9$4,519 AUD
Retailer 7$4,529 AUD
Retailer 1$6,357 AUD

44 data points across 11 retailers

16 retailers$3,295 AUD to $6,357 AUD

A
Cheapest Retailer
-
$3,295 AUD
A
Retailer 2
-
$3,347 AUD
View
A
Retailer 3
-
$3,368 AUD
View
Final sale: no returns
A
Retailer 4
-
$3,599 AUD
View
Retailer 5
-
$3,816 AUD
View
Price last confirmed 37 days ago
Retailer 6
-
$3,816 AUD
View
Price last confirmed 22 days ago
B+
Retailer 7
-
$3,852 AUD
View
B+
Retailer 8
-
$3,898 AUD
View
A
Retailer 9
-
$3,916 AUD
View
Retailer 10
-
$3,963 AUD
View
Price last confirmed 37 days ago
Retailer 11
-
$4,403 AUD
View
Price last confirmed 62 days ago
Retailer 12
-
$4,403 AUD
View
Price last confirmed 39 days ago
B+
Retailer 13
-
$4,519 AUD
View
B+
Retailer 14
-
$4,529 AUD
View
B
Retailer 15
-
$6,357 AUD
View
Most Expensive
NZ Jewellers
5d6ee5f4-fb6c-488f-bf38-66a35693000d · Sep 30
$7,979 AUD
$5,482 USD
View
Price last confirmed 37 days ago
15 more retailers have this diamond
Prices start from $3,295 AUDSave up to $3,062 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
1.31ct Heart
$3,295 AUD