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Heart|Natural|GIA

0.51ct E SI1 Heart Natural Diamond

GD • E/SI1 • GIA 6535286009

Certificate GIA 6535286009

Diamond specifications and retailer prices

From $592 AUD
As of November 6, 2026
Save $168 AUD (22%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $760 AUD at 77 Diamonds · As of November 6, 2026
View at 77 Diamonds

About this 0.51ct natural heart diamond

This 0.51ct natural heart sits in the half to three-quarter carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6535286009. Listed at 4 retailers as of November 6, 2026, with prices from $592 to $760, a $168 spread on the same certified stone. 77 Diamonds lists it at $760. 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
E
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6535286009
Dimensions4.61 × 5.50 × 3.31 mm
L/W Ratio1.19
Top View
4.61 mm5.50 mm0.51 ctE / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6535286009
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 60.2%

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 6
Current: $760 AUD|Low: $550 AUD|High: $855 AUD|Avg: $673 AUD|-8.9%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 4$592 AUD
Retailer 2$614 AUD
Retailer 3$667 AUD
77 Diamonds$760 AUD

42 data points across 4 retailers

4 retailers$592 AUD to $760 AUD

A
Cheapest Retailer
-
$592 AUD
A
Retailer 2
-
$614 AUD
View
Final sale: no returns
B+
Retailer 3
-
$667 AUD
View
Most Expensive
B+
77 Diamonds
HSCPKG5EK6RA · Nov 6
$760 AUD
£411 GBP
View
3 more retailers have this diamond
Prices start from $592 AUDSave up to $168 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
$592 AUD