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Heart|Natural|GIA

0.51ct D SI1 Heart Natural Diamond

VG • D/SI1 • GIA 2517450428

Certificate GIA 2517450428

Diamond specifications and retailer prices

From $784 AUD
As of November 6, 2026
Save $1,882 AUD (71%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $2,666 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 0.51ct natural heart diamond

This 0.51ct natural heart sits in the half to three-quarter carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2517450428. Listed at 11 retailers as of November 5, 2026, with prices from $784 to $2,666, a $1,882 spread on the same certified stone. NZ Jewellers lists it at $2,666. 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

0.51
Carat
D
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle36°
Pavilion angle43.5°
OriginNatural
Grading LabGIA
CertificateGIA 2517450428
Dimensions5.37 × 5.05 × 3.24 mm
L/W Ratio1.06
Top View
5.37 mm5.05 mm0.51 ctD / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2517450428
Side View
Table 56.0%Crown 36°Girdle: MED-VTKPavilion 43.5°Culet: NoneDepth 60.4%

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: $2,666 AUD|Low: $709 AUD|High: $2,666 AUD|Avg: $1,190 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
November 6, 2026
Retailer 12$784 AUD
Retailer 11$850 AUD
Retailer 9$915 AUD
Retailer 10$915 AUD
Retailer 4$930 AUD
Retailer 7$981 AUD
Retailer 8$981 AUD
Retailer 3$1,022 AUD
Retailer 2$1,250 AUD
Retailer 5$1,311 AUD
Retailer 6$1,960 AUD
NZ Jewellers$2,666 AUD

41 data points across 12 retailers

11 retailers$784 AUD to $2,666 AUD

A
Cheapest Retailer
-
$784 AUD
Final sale: no returns
A
Retailer 2
-
$850 AUD
View
Retailer 3
-
$915 AUD
View
Price last confirmed 9 days ago
B+
Retailer 4
-
$915 AUD
View
B+
Retailer 5
-
$981 AUD
View
B+
Retailer 6
-
$981 AUD
View
Retailer 7
-
$1,022 AUD
View
Price last confirmed 11 days ago
B
Retailer 8
-
$1,250 AUD
View
B+
Retailer 9
-
$1,311 AUD
View
B
Retailer 10
-
$1,960 AUD
View
Most Expensive
B
NZ Jewellers
f2b20deb-afc6-441f-aba4-4c8e985227b0 · Nov 5
$2,666 AUD
$1,832 USD
View
10 more retailers have this diamond
Prices start from $784 AUDSave up to $1,882 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
0.51ct Heart
$784 AUD