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Heart|Natural|GIA

0.51ct I SI2 Heart Natural Diamond

GD • I/SI2 • GIA 7566242820

Certificate GIA 7566242820

Diamond specifications and retailer prices

From $574 AUD
SGD 545 SGD
As of November 1, 2026
Save $93 AUD (14%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $667 AUD at 77 Diamonds · As of November 2, 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 7566242820. Listed at 2 retailers as of November 1, 2026, with prices from $574 to $667, a $93 spread on the same certified stone. 77 Diamonds lists it at $667. 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
I
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 7566242820
Dimensions5.12 × 5.53 × 3.00 mm
L/W Ratio1.08
Culet sizeNone
Key to symbols
Twinning Wisp
Top View
5.12 mm5.53 mm0.51 ctI / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7566242820
Side View
Table 56.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 54.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 1
Current: $667 AUD|Low: $574 AUD|High: $688 AUD|Avg: $654 AUD|-0.3%
77 Diamonds
Retailer 2
November 2, 2026
Retailer 2$574 AUD
77 Diamonds$667 AUD

32 data points across 2 retailers

2 retailers$574 AUD to $667 AUD

B+
Cheapest Retailer
-
$574 AUD
SGD 545 SGD
Most Expensive
B+
77 Diamonds
HSCPSM8HMXF4 · Nov 2
$667 AUD
£369 GBP
View
1 more retailer has this diamond
Prices start from $574 AUDSave up to $93 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
$574 AUD