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Round|Natural|GIA

0.51ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 3335726797

Certificate GIA 3335726797

Diamond specifications and retailer prices

From $599 AUD
As of November 6, 2026
Save $497 AUD (45%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $2,563 AUD at NZ Jewellers · As of October 20, 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 3335726797. Listed at 15 retailers as of November 2, 2026, with a 83% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3335726797
Dimensions5.12 × 5.11 × 3.18 mm
L/W Ratio1.00
Top View
5.12 mm5.11 mm0.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3335726797
Side View
Table 55.0%CrownGirdle: ThickPavilionCulet: NoneDepth 62.2%

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: $2,563 AUD|Low: $599 AUD|High: $2,563 AUD|Avg: $1,085 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 6, 2026
Retailer 2$599 AUD
Retailer 14$817 AUD
Retailer 5$843 AUD
Retailer 9$867 AUD
Retailer 7$880 AUD
Retailer 13$880 AUD
Retailer 15$880 AUD
Retailer 4$943 AUD
Retailer 10$951 AUD
Retailer 12$989 AUD
Retailer 3$1,004 AUD
Retailer 6$1,010 AUD
Retailer 8$1,096 AUD
Retailer 11$1,897 AUD
NZ Jewellers$2,563 AUD

39 data points across 15 retailers

15 retailers$599 AUD to $1,096 AUD

A
Cheapest Retailer
-
$599 AUD
Retailer 2
-
$817 AUD
View
Price last confirmed 15 days ago
Retailer 3
-
$843 AUD
View
Price last confirmed 30 days ago
Retailer 4
-
$880 AUD
View
Price last confirmed 17 days ago
Retailer 5
-
$880 AUD
View
Price last confirmed 22 days ago
Retailer 6
-
$880 AUD
View
Price last confirmed 21 days ago
Retailer 7
-
$943 AUD
View
Price last confirmed 68 days ago
Retailer 8
-
$943 AUD
View
Price last confirmed 17 days ago
Retailer 9
-
$951 AUD
View
Price last confirmed 15 days ago
Retailer 10
-
$989 AUD
View
Price last confirmed 15 days ago
Retailer 11
-
$1,004 AUD
View
Price last confirmed 19 days ago
B+
Retailer 12
-
$1,096 AUD
View
Retailer 13
-
$1,897 AUD
View
Price last confirmed 16 days ago
Retailer 14
-
$2,563 AUD
View
Price last confirmed 69 days ago
Most Expensive
NZ Jewellers
8f74cdf0-1390-4605-a88a-9cf302843254 · Oct 20
$2,563 AUD
$1,794 USD
View
Price last confirmed 17 days ago
14 more retailers have this diamond
Prices start from $599 AUDSave up to $497 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
$599 AUD