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Heart|Natural|IGI

1.51ct J VS1 Heart Natural Diamond

VG • J/VS1 • IGI 685580910

Shape and cutting style on the report: Heart brilliant

Certificate IGI 685580910

Diamond specifications and retailer prices

From $3,435 AUD
₹229,807 INR
As of November 1, 2026
Save $3,806 AUD (53%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $7,544 AUD at NZ Jewellers · As of September 30, 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 J colour (near-colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI 685580910. Listed at 16 retailers as of November 1, 2026, with a 111% 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

1.51
Carat
J
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.7°
Pavilion angle39.2°
OriginNatural
Grading LabIGI
CertificateIGI 685580910
Dimensions6.97 × 7.81 × 4.61 mm
L/W Ratio1.12
Girdle conditionFaceted
Culet sizePointed
Top View
6.97 mm7.81 mm1.51 ctJ / VS1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 685580910
Side View
Table 57.0%Crown 38.7°Girdle: ThickPavilion 39.2°Culet: NoneDepth 59.0%

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 1
Current: $4,712 AUD|Low: $3,427 AUD|High: $7,328 AUD|Avg: $4,717 AUD|+1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 2, 2026
Retailer 2$3,435 AUD
Retailer 6$3,879 AUD
Retailer 3$4,080 AUD
Retailer 1$4,712 AUD
Retailer 5$5,322 AUD
Retailer 4$7,241 AUD

32 data points across 6 retailers

16 retailers$3,435 AUD to $7,241 AUD

A
Cheapest Retailer
-
$3,435 AUD
₹229,807 INR
A
Retailer 2
-
$3,876 AUD
$2,723 USD
View
A
Retailer 3
-
$3,879 AUD
$2,725 USD
View
A
Retailer 4
-
$3,995 AUD
$2,806 USD
View
A
Retailer 5
-
$4,080 AUD
£2,257 GBP
View
Retailer 6
-
$4,329 AUD
$3,041 USD
View
Price last confirmed 31 days ago
Retailer 7
-
$4,329 AUD
$3,041 USD
View
Price last confirmed 38 days ago
Retailer 8
-
$4,496 AUD
$3,158 USD
View
Price last confirmed 32 days ago
B+
Retailer 9
-
$4,533 AUD
$3,184 USD
View
A
Retailer 10
-
$4,712 AUD
£2,606 GBP
View
Retailer 11
-
$4,995 AUD
$3,509 USD
View
Price last confirmed 38 days ago
Retailer 12
-
$4,995 AUD
$3,509 USD
View
Price last confirmed 33 days ago
B+
Retailer 13
-
$5,322 AUD
ZAR 60,392 ZAR
View
B
Retailer 14
-
$7,241 AUD
£4,005 GBP
View
Retailer 15
-
$7,544 AUD
$5,299 USD
View
Price last confirmed 37 days ago
Most Expensive
NZ Jewellers
6d9a2199-256f-475f-8a44-01792de0bb04 · Sep 30
$7,544 AUD
$5,299 USD
View
Price last confirmed 32 days ago
15 more retailers have this diamond
Prices start from $3,435 AUDSave up to $3,806 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
$3,435 AUD