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Round|Natural|GIA

0.51ct K I1 Round Natural Diamond

VG • K/I1 • GIA 2228751593

Certificate GIA 2228751593

Diamond specifications and retailer prices

From $676 AUD
As of November 5, 2026
Save $1,664 AUD (71%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $2,340 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 I1 clarity (included), with a very-good cut grade and certified by GIA 2228751593. Listed at 6 retailers as of November 4, 2026, with prices from $676 to $2,340, a $1,664 spread on the same certified stone. NZ Jewellers lists it at $2,340. 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
K
Colour
I1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle37°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2228751593
Dimensions5.01 × 5.05 × 3.22 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
5.01 mm5.05 mm0.51 ctK / I1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 2228751593
Side View
Table 58.0%Crown 37°Girdle: STK-THKPavilion 41°Culet: NoneDepth 64.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $2,340 AUD|Low: $676 AUD|High: $2,340 AUD|Avg: $1,034 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 5$676 AUD
Retailer 3$729 AUD
Retailer 7$729 AUD
Retailer 6$780 AUD
Retailer 4$830 AUD
Retailer 8$921 AUD
Retailer 2$1,106 AUD
Retailer 9$1,121 AUD
NZ Jewellers$2,340 AUD

19 data points across 9 retailers

6 retailers$676 AUD to $2,340 AUD

B+
Cheapest Retailer
-
$676 AUD
Retailer 2
-
$729 AUD
View
Price last confirmed 8 days ago
B
Retailer 3
-
$729 AUD
View
B
Retailer 4
-
$780 AUD
View
B
Retailer 5
-
$1,106 AUD
View
Most Expensive
C
NZ Jewellers
0190e13d-0735-4f47-85d2-c1bd336b2d44 · Nov 4
$2,340 AUD
$1,638 USD
View
5 more retailers have this diamond
Prices start from $676 AUDSave up to $1,664 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 Round
$676 AUD