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Round|Natural|IGI

0.51ct K VS1 Round Natural Diamond

EX • K/VS1 • IGI 508117087

Shape and cutting style on the report: Round brilliant

Certificate IGI 508117087

Diamond specifications and retailer prices

From $476 AUD
As of November 6, 2026
Save $2,027 AUD (81%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $2,503 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 VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI 508117087. Listed at 21 retailers as of November 4, 2026, with a 426% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

0.51
Carat
K
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle34.6°
Pavilion angle41.1°
OriginNatural
Grading LabIGI
CertificateIGI 508117087
Dimensions5.14 × 5.11 × 3.18 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
5.14 mm5.11 mm0.51 ctK / VS1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 508117087
Side View
Table 57.5%Crown 34.6°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 62.0%

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: $2,503 AUD|Low: $476 AUD|High: $2,503 AUD|Avg: $1,203 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 2$476 AUD
Retailer 10$703 AUD
Retailer 6$831 AUD
Retailer 5$834 AUD
Retailer 11$870 AUD
Retailer 4$931 AUD
Retailer 8$950 AUD
Retailer 7$1,011 AUD
Retailer 9$1,506 AUD
Retailer 3$1,921 AUD
NZ Jewellers$2,503 AUD

38 data points across 11 retailers

21 retailers$476 AUD to $2,503 AUD

A
Cheapest Retailer
-
$476 AUD
Retailer 2
-
$653 AUD
View
Price last confirmed 44 days ago
Retailer 3
-
$653 AUD
View
Price last confirmed 17 days ago
Retailer 4
-
$679 AUD
View
Price last confirmed 30 days ago
Retailer 5
-
$703 AUD
View
Price last confirmed 8 days ago
Retailer 6
-
$753 AUD
View
Price last confirmed 45 days ago
A
Retailer 7
-
$753 AUD
View
A
Retailer 8
-
$753 AUD
View
B+
Retailer 9
-
$831 AUD
View
B+
Retailer 10
-
$834 AUD
View
B+
Retailer 11
-
$840 AUD
View
B+
Retailer 12
-
$870 AUD
View
B+
Retailer 13
-
$931 AUD
View
B+
Retailer 14
-
$950 AUD
View
B+
Retailer 15
-
$1,011 AUD
View
B
Retailer 16
-
$1,506 AUD
View
Retailer 17
-
$1,921 AUD
View
Price last confirmed 16 days ago
Retailer 18
-
$2,073 AUD
View
Price last confirmed 15 days ago
B
Retailer 19
-
$2,503 AUD
View
Retailer 20
-
$2,503 AUD
View
Price last confirmed 46 days ago
Most Expensive
NZ Jewellers
c9809af7-3e34-415e-ba69-30e5413ca627 · Oct 20
$2,503 AUD
$1,752 USD
View
Price last confirmed 17 days ago
20 more retailers have this diamond
Prices start from $476 AUDSave up to $2,027 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
$476 AUD