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Heart|Natural|GIA

0.51ct F SI1 Heart Natural Diamond

GD • F/SI1 • GIA 6561678771

Certificate GIA 6561678771

Diamond specifications and retailer prices

From $728 AUD
As of November 6, 2026
Save $349 AUD (32%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $1,077 AUD at RockHer · As of November 7, 2026
View at RockHer

About this 0.51ct natural heart diamond

This 0.51ct natural heart sits in the half to three-quarter carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6561678771. Listed at 8 retailers as of November 6, 2026, with prices from $728 to $1,077, a $349 spread on the same certified stone. RockHer lists it at $1,077. 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
F
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6561678771
Dimensions5.37 × 6.36 × 1.71 mm
L/W Ratio1.18
Culet sizeNone
Key to symbols
Cloud, Crystal
Top View
5.37 mm6.36 mm0.51 ctF / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 6561678771
Side View
Table 75.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 26.9%

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: $963 AUD|Low: $728 AUD|High: $1,118 AUD|Avg: $886 AUD|+0.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
RockHer
November 6, 2026
Retailer 4$728 AUD
Retailer 6$796 AUD
Retailer 3$824 AUD
Retailer 1$963 AUD
Retailer 2$981 AUD
Retailer 5$988 AUD
RockHer$1,077 AUD

6 data points across 7 retailers

8 retailers$728 AUD to $1,077 AUD

B+
Cheapest Retailer
-
$728 AUD
Final sale: no returns
B+
Retailer 2
-
$796 AUD
View
B
Retailer 3
-
$824 AUD
View
B
Retailer 4
-
$850 AUD
View
B
Retailer 5
-
$963 AUD
View
B
Retailer 6
-
$981 AUD
View
B
Retailer 7
-
$988 AUD
View
Most Expensive
B
RockHer
1871b45b3 · Nov 7
$1,077 AUD
$740 USD
View
7 more retailers have this diamond
Prices start from $728 AUDSave up to $349 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+
0.51ct Heart
$728 AUD