CaratHunter
Plans
Heart|Natural|GIA

1.51ct J SI1 Heart Natural Diamond

GD • J/SI1 • GIA 7556434354

Certificate GIA 7556434354

Diamond specifications and retailer prices

From $4,906 AUD
As of November 6, 2026
Save $10,301 AUD (68%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $15,207 AUD at NZ Jewellers · As of November 3, 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 7556434354. Listed at 19 retailers as of November 3, 2026, with prices from $4,906 to $15,207, a $10,301 spread on the same certified stone. NZ Jewellers lists it at $15,207. 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
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7556434354
Dimensions6.92 × 8.15 × 4.81 mm
L/W Ratio1.18
Culet sizeNone
Key to symbols
Crystal, Feather
Top View
6.92 mm8.15 mm1.51 ctJ / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7556434354
Side View
Table 60.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 59.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $15,207 AUD|Low: $4,906 AUD|High: $15,207 AUD|Avg: $8,631 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
Retailer 17
Retailer 18
Retailer 19
Retailer 20
November 7, 2026
Retailer 13$4,906 AUD
Retailer 16$5,190 AUD
Retailer 2$5,223 AUD
Retailer 14$5,603 AUD
Retailer 15$5,792 AUD
Retailer 7$5,988 AUD
Retailer 12$6,316 AUD
Retailer 4$7,379 AUD
Retailer 3$7,667 AUD
Retailer 9$7,699 AUD
Retailer 5$8,238 AUD
Retailer 6$8,238 AUD
Retailer 20$8,238 AUD
Retailer 19$9,035 AUD
Retailer 11$9,504 AUD
Retailer 10$10,026 AUD
Retailer 8$10,095 AUD
Retailer 18$11,170 AUD
Retailer 17$13,394 AUD
NZ Jewellers$15,207 AUD

44 data points across 20 retailers

19 retailers$4,906 AUD to $15,207 AUD

B+
Cheapest Retailer
-
$4,906 AUD
B+
Retailer 2
-
$5,190 AUD
View
B+
Retailer 3
-
$5,223 AUD
View
B+
Retailer 4
-
$5,603 AUD
View
B+
Retailer 5
-
$5,792 AUD
View
B
Retailer 6
-
$5,988 AUD
View
B
Retailer 7
-
$7,379 AUD
View
B
Retailer 8
-
$7,667 AUD
View
B
Retailer 9
-
$7,699 AUD
View
B
Retailer 10
-
$8,238 AUD
View
B
Retailer 11
-
$8,238 AUD
View
Retailer 12
-
$8,238 AUD
View
Price last confirmed 9 days ago
Retailer 13
-
$9,035 AUD
View
Price last confirmed 34 days ago
B
Retailer 14
-
$9,504 AUD
View
Retailer 15
-
$10,026 AUD
View
Price last confirmed 15 days ago
C
Retailer 16
-
$10,095 AUD
View
C
Retailer 17
-
$11,170 AUD
View
C
Retailer 18
-
$13,394 AUD
View
Most Expensive
C
NZ Jewellers
4c887f89-ae48-4848-b060-e48d0b93199a · Nov 3
$15,207 AUD
$10,449 USD
View
18 more retailers have this diamond
Prices start from $4,906 AUDSave up to $10,301 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.

B+
1.51ct Heart
$4,906 AUD