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Heart|Natural|GIA

0.51ct G SI1 Heart Natural Diamond

GD • G/SI1 • GIA 7516856049

Certificate GIA 7516856049

Diamond specifications and retailer prices

From $579 AUD
As of November 6, 2026
Save $162 AUD (22%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $741 AUD at 77 Diamonds · As of November 7, 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 G 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 7516856049. Listed at 4 retailers as of November 6, 2026, with prices from $579 to $741, a $162 spread on the same certified stone. 77 Diamonds lists it at $741. 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
G
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 7516856049
Dimensions4.80 × 5.66 × 3.31 mm
L/W Ratio1.18
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal
Top View
4.80 mm5.66 mm0.51 ctG / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 7516856049
Side View
Table 59.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 58.5%

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: $741 AUD|Low: $555 AUD|High: $859 AUD|Avg: $672 AUD|-12.1%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
November 7, 2026
Retailer 2$579 AUD
Retailer 3$601 AUD
Retailer 4$649 AUD
77 Diamonds$741 AUD

42 data points across 4 retailers

4 retailers$579 AUD to $741 AUD

A
Cheapest Retailer
-
$579 AUD
A
Retailer 2
-
$601 AUD
View
Final sale: no returns
A
Retailer 3
-
$649 AUD
View
Most Expensive
B+
77 Diamonds
HSCPBGEWDZVG · Nov 7
$741 AUD
£401 GBP
View
3 more retailers have this diamond
Prices start from $579 AUDSave up to $162 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
$579 AUD