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Heart|Natural|GIA

1.51ct J SI2 Heart Natural Diamond

VG • J/SI2 • GIA 6555416730

Certificate GIA 6555416730

Diamond specifications and retailer prices

From $4,282 AUD
HK$23,500 HKD
As of November 1, 2026
Save $5,023 AUD (54%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $10,573 AUD at NZ Jewellers · As of September 25, 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 SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6555416730. Listed at 13 retailers as of November 1, 2026, with a 117% 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
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555416730
Dimensions7.00 × 7.96 × 4.59 mm
L/W Ratio1.14
Girdle conditionFaceted
Top View
7.00 mm7.96 mm1.51 ctJ / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555416730
Side View
Table 59.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 57.7%

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: $5,572 AUD|Low: $4,244 AUD|High: $10,258 AUD|Avg: $6,126 AUD|-8.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 10$4,282 AUD
Retailer 9$4,295 AUD
Retailer 7$4,565 AUD
Retailer 2$4,648 AUD
Retailer 5$4,712 AUD
Retailer 8$5,367 AUD
Retailer 1$5,572 AUD
Retailer 6$5,765 AUD
Retailer 4$7,716 AUD
Retailer 3$8,948 AUD
Retailer 11$9,306 AUD

32 data points across 11 retailers

13 retailers$4,282 AUD to $9,306 AUD

A
Cheapest Retailer
-
$4,282 AUD
HK$23,500 HKD
A
Retailer 2
-
$4,295 AUD
$3,017 USD
View
A
Retailer 3
-
$4,565 AUD
$3,207 USD
View
B+
Retailer 4
-
$4,648 AUD
$3,265 USD
View
A
Retailer 5
-
$4,712 AUD
$3,310 USD
View
Final sale: no returns
B+
Retailer 6
-
$5,367 AUD
$3,770 USD
View
B+
Retailer 7
-
$5,572 AUD
£3,082 GBP
View
B+
Retailer 8
-
$5,765 AUD
£3,189 GBP
View
B
Retailer 9
-
$6,041 AUD
View
B
Retailer 10
-
$7,716 AUD
$5,420 USD
View
Retailer 11
-
$8,948 AUD
$6,285 USD
View
Price last confirmed 9 days ago
B
Retailer 12
-
$9,306 AUD
£5,147 GBP
View
Most Expensive
NZ Jewellers
6f2462ab-5ecf-4591-b833-fc925a441d77 · Sep 25
$10,573 AUD
$7,427 USD
View
Price last confirmed 37 days ago
12 more retailers have this diamond
Prices start from $4,282 AUDSave up to $5,023 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
$4,282 AUD