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Round|Natural|IGI

0.51ct K VS1 Round Natural Diamond

EX • K/VS1 • IGI 831666593

Shape and cutting style on the report: Round brilliant

Certificate IGI 831666593

Diamond specifications and retailer prices

From $570 AUD
As of November 5, 2026
Save $1,616 AUD (74%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $2,186 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 VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI 831666593. Listed at 15 retailers as of November 4, 2026, with prices from $570 to $2,186, a $1,616 spread on the same certified stone. NZ Jewellers lists it at $2,186. 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
FluorescenceNone
Crown angle34.5°
Pavilion angle40.8°
OriginNatural
Grading LabIGI
CertificateIGI 831666593
Dimensions5.13 × 5.16 × 3.15 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
5.13 mm5.16 mm0.51 ctK / VS1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 831666593
Side View
Table 58.0%Crown 34.5°Girdle: THN-MEDPavilion 40.8°Culet: NoneDepth 61.2%

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 5
Current: $2,186 AUD|Low: $376 AUD|High: $2,186 AUD|Avg: $802 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 7$376 AUD
Retailer 4$570 AUD
Retailer 12$586 AUD
Retailer 5$614 AUD
Retailer 6$614 AUD
Retailer 15$659 AUD
Retailer 2$714 AUD
Retailer 10$743 AUD
Retailer 8$757 AUD
Retailer 3$843 AUD
Retailer 13$871 AUD
Retailer 11$884 AUD
Retailer 9$1,026 AUD
Retailer 14$1,314 AUD
NZ Jewellers$2,186 AUD

26 data points across 15 retailers

15 retailers$570 AUD to $2,186 AUD

Retailer 1
-
$376 AUD
Price last confirmed 15 days ago
A
Retailer 2
-
$570 AUD
View
B+
Retailer 3
-
$586 AUD
View
Retailer 4
-
$614 AUD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$614 AUD
View
A
Retailer 6
-
$659 AUD
View
A
Retailer 7
-
$714 AUD
View
B+
Retailer 8
-
$743 AUD
View
A
Retailer 9
-
$757 AUD
View
B+
Retailer 10
-
$843 AUD
View
B+
Retailer 11
-
$871 AUD
View
B+
Retailer 12
-
$884 AUD
View
B
Retailer 13
-
$1,026 AUD
View
B
Retailer 14
-
$1,314 AUD
View
Most Expensive
B
NZ Jewellers
2fa79e66-87a0-4b32-8206-804d353d6a58 · Nov 4
$2,186 AUD
$1,530 USD
View
14 more retailers have this diamond
Prices start from $570 AUDSave up to $1,616 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
$570 AUD