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Heart|Natural|GIA

1.51ct J SI1 Heart Natural Diamond

VG • J/SI1 • GIA 6461791663

Certificate GIA 6461791663

Diamond specifications and retailer prices

From $3,414 AUD
As of November 5, 2026
Save $4,769 AUD (58%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $8,184 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6461791663. Listed at 16 retailers as of November 5, 2026, with prices from $3,414 to $8,184, a $4,769 spread on the same certified stone. NZ Jewellers lists it at $8,184. 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
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43°
Pavilion angle40.7°
OriginNatural
Grading LabGIA
CertificateGIA 6461791663
Dimensions7.88 × 6.69 × 3.99 mm
L/W Ratio1.18
Top View
7.88 mm6.69 mm1.51 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6461791663
Side View
Table 61.0%Crown 43°Girdle: MED-THKPavilion 40.7°Culet: NoneDepth 59.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $8,184 AUD|Low: $3,395 AUD|High: $8,184 AUD|Avg: $5,135 AUD
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
Retailer 16
November 7, 2026
Retailer 11$3,414 AUD
Retailer 6$4,170 AUD
Retailer 4$4,248 AUD
Retailer 9$4,494 AUD
Retailer 3$4,555 AUD
Retailer 14$4,697 AUD
Retailer 16$4,697 AUD
Retailer 2$4,860 AUD
Retailer 15$4,879 AUD
Retailer 7$4,906 AUD
Retailer 5$5,066 AUD
Retailer 8$5,223 AUD
Retailer 13$5,420 AUD
Retailer 10$5,733 AUD
Retailer 12$7,834 AUD
NZ Jewellers$8,184 AUD

35 data points across 16 retailers

16 retailers$3,414 AUD to $8,184 AUD

A
Cheapest Retailer
-
$3,414 AUD
B+
Retailer 2
-
$4,170 AUD
View
A
Retailer 3
-
$4,248 AUD
View
A
Retailer 4
-
$4,494 AUD
View
B+
Retailer 5
-
$4,555 AUD
View
Retailer 6
-
$4,697 AUD
View
Price last confirmed 9 days ago
B+
Retailer 7
-
$4,697 AUD
View
B+
Retailer 8
-
$4,860 AUD
View
B+
Retailer 9
-
$4,879 AUD
View
B+
Retailer 10
-
$4,906 AUD
View
B+
Retailer 11
-
$5,066 AUD
View
Retailer 12
-
$5,223 AUD
View
Price last confirmed 34 days ago
B+
Retailer 13
-
$5,420 AUD
View
B+
Retailer 14
-
$5,733 AUD
View
B
Retailer 15
-
$7,834 AUD
View
Most Expensive
B
NZ Jewellers
ba6110bf-a87c-4514-9f34-12ce22442cc8 · Nov 5
$8,184 AUD
$5,623 USD
View
15 more retailers have this diamond
Prices start from $3,414 AUDSave up to $4,769 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
$3,414 AUD