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Heart|Natural|GIA

0.51ct K IF Heart Natural Diamond

EX • K/IF • GIA 6545351327

Certificate GIA 6545351327

Diamond specifications and retailer prices

From $779 AUD
As of November 5, 2026
12 retailers carry this diamond
Most expensive: $2,455 AUD at NZ Jewellers · As of September 25, 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 K colour (faint-tinted) and IF clarity (flawless or internally-flawless), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6545351327. Listed at 12 retailers as of November 5, 2026. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.51
Carat
K
Colour
IF
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Pavilion angle39.1°
OriginNatural
Grading LabGIA
CertificateGIA 6545351327
Dimensions4.73 × 5.47 × 3.43 mm
L/W Ratio1.16
Top View
4.73 mm5.47 mm0.51 ctK / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6545351327
Side View
Table 57.0%CrownGirdle: THN-THKPavilion 39.1°Culet: NoneDepth 62.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 5
Current: $779 AUD|Low: $483 AUD|High: $1,483 AUD|Avg: $793 AUD|+0.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 5, 2026
Retailer 3$483 AUD
Retailer 4$538 AUD
Retailer 2$566 AUD
Retailer 13$600 AUD
Retailer 7$636 AUD
Retailer 6$669 AUD
Retailer 5$704 AUD
Retailer 1$779 AUD
Retailer 9$848 AUD
Retailer 10$908 AUD
Retailer 11$917 AUD
Retailer 8$936 AUD
Retailer 12$1,425 AUD

30 data points across 13 retailers

12 retailers

Retailer 1
-
$483 AUD
Price last confirmed 11 days ago
Retailer 2
-
$538 AUD
View
Price last confirmed 15 days ago
Retailer 3
-
$600 AUD
View
Price last confirmed 15 days ago
Retailer 4
-
$636 AUD
View
Price last confirmed 13 days ago
Retailer 5
-
$669 AUD
View
Price last confirmed 14 days ago
A
Retailer 6
-
$779 AUD
View
Retailer 7
-
$848 AUD
View
Price last confirmed 15 days ago
Retailer 8
-
$908 AUD
View
Price last confirmed 10 days ago
Retailer 9
-
$917 AUD
View
Price last confirmed 15 days ago
Retailer 10
-
$936 AUD
View
Price last confirmed 17 days ago
Retailer 11
-
$1,425 AUD
View
Price last confirmed 17 days ago
Most Expensive
NZ Jewellers
a721244d-a320-4248-95f0-142f0814ba4f · Sep 25
$2,455 AUD
$1,687 USD
View
Price last confirmed 42 days ago
11 more retailers have this diamond
Prices start from $779 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
$779 AUD