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Round|Natural|IGI

0.51ct N SI2 Round Natural Diamond

EX • N/SI2 • IGI 337846057

Shape and cutting style on the report: Round brilliant

Certificate IGI 337846057

Diamond specifications and retailer prices

From $366 AUD
As of November 5, 2026
Save $1,293 AUD (78%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $1,658 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 N colour (tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 337846057. Listed at 8 retailers as of November 4, 2026, with prices from $366 to $1,658, a $1,293 spread on the same certified stone. NZ Jewellers lists it at $1,658. 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
N
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.6°
Pavilion angle41.7°
OriginNatural
Grading LabIGI
CertificateIGI 337846057
Dimensions5.04 × 5.06 × 3.21 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
5.04 mm5.06 mm0.51 ctN / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 337846057
Side View
Table 59.0%Crown 35.6°GirdlePavilion 41.7°Culet: NoneDepth 63.6%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: $616 AUD|Low: $481 AUD|High: $623 AUD|Avg: $549 AUD|+0.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
November 5, 2026
Retailer 4$481 AUD
Retailer 3$549 AUD
Retailer 2$551 AUD
Retailer 1$616 AUD

15 data points across 4 retailers

8 retailers$366 AUD to $1,658 AUD

B+
Cheapest Retailer
-
$366 AUD
Retailer 2
-
$394 AUD
View
Price last confirmed 8 days ago
B+
Retailer 3
-
$409 AUD
View
B+
Retailer 4
-
$481 AUD
View
B+
Retailer 5
-
$493 AUD
View
B+
Retailer 6
-
$551 AUD
View
B
Retailer 7
-
$616 AUD
View
Most Expensive
C
NZ Jewellers
6d82bd57-6596-45a3-8e42-55c7ba667f3e · Nov 4
$1,658 AUD
$1,161 USD
View
7 more retailers have this diamond
Prices start from $366 AUDSave up to $1,293 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
$366 AUD