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Round|Natural|GIA

0.51ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 6482247427

Certificate GIA 6482247427

Diamond specifications and retailer prices

From $446 AUD
As of November 6, 2026
Save $1,908 AUD (81%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $2,354 AUD at NZ Jewellers · As of November 4, 2026
View at NZ Jewellers

About this 0.51ct natural round diamond

This 0.51ct natural round sits in the half to three-quarter carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6482247427. Listed at 10 retailers as of November 4, 2026, with prices from $446 to $2,354, a $1,908 spread on the same certified stone. NZ Jewellers lists it at $2,354. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.51
Carat
K
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle36°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6482247427
Dimensions5.10 × 5.13 × 3.19 mm
L/W Ratio1.01
Star length50%
Top View
5.10 mm5.13 mm0.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6482247427
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $2,354 AUD|Low: $446 AUD|High: $2,354 AUD|Avg: $937 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 2$446 AUD
Retailer 6$596 AUD
Retailer 9$614 AUD
Retailer 7$661 AUD
Retailer 8$661 AUD
Retailer 10$709 AUD
Retailer 3$750 AUD
Retailer 4$986 AUD
Retailer 5$1,416 AUD
NZ Jewellers$2,354 AUD

39 data points across 10 retailers

10 retailers$446 AUD to $2,354 AUD

A
Cheapest Retailer
-
$446 AUD
A
Retailer 2
-
$596 AUD
View
A
Retailer 3
-
$614 AUD
View
Retailer 4
-
$661 AUD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$661 AUD
View
B+
Retailer 6
-
$709 AUD
View
B+
Retailer 7
-
$750 AUD
View
B+
Retailer 8
-
$986 AUD
View
B
Retailer 9
-
$1,416 AUD
View
Most Expensive
C
NZ Jewellers
e864780e-869e-4f09-b5b9-8bd65a40d5b6 · Nov 4
$2,354 AUD
$1,648 USD
View
9 more retailers have this diamond
Prices start from $446 AUDSave up to $1,908 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 Round
$446 AUD