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 $399 USD
As of November 5, 2026
Save $1,131 USD (74%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,530 USD 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 $399 to $1,530, a $1,131 spread on the same certified stone. NZ Jewellers lists it at $1,530. 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
Color
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: $1,530 USD|Low: $263 USD|High: $1,530 USD|Avg: $562 USD
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$263 USD
Retailer 4$399 USD
Retailer 12$410 USD
Retailer 5$430 USD
Retailer 6$430 USD
Retailer 15$461 USD
Retailer 2$500 USD
Retailer 10$520 USD
Retailer 8$530 USD
Retailer 3$590 USD
Retailer 13$610 USD
Retailer 11$619 USD
Retailer 9$718 USD
Retailer 14$920 USD
NZ Jewellers$1,530 USD

26 data points across 15 retailers

15 retailers$399 USD to $1,530 USD

Retailer 1
-
$263 USD
Price last confirmed 15 days ago
A
Retailer 2
-
$399 USD
View
B+
Retailer 3
-
$410 USD
View
Retailer 4
-
$430 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$430 USD
View
A
Retailer 6
-
$461 USD
View
A
Retailer 7
-
$500 USD
View
B+
Retailer 8
-
$520 USD
View
A
Retailer 9
-
$530 USD
View
B+
Retailer 10
-
$590 USD
View
B+
Retailer 11
-
$610 USD
View
B+
Retailer 12
-
$619 USD
View
B
Retailer 13
-
$718 USD
View
B
Retailer 14
-
$920 USD
View
Most Expensive
B
NZ Jewellers
2fa79e66-87a0-4b32-8206-804d353d6a58 · Nov 4
$1,530 USD
View
14 more retailers have this diamond
Prices start from $399 USDSave up to $1,131 USD

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
$399 USD