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0.51ct N SI2 Round Natural Diamond

EX • N/SI2 • IGI 171549685

Shape and cutting style on the report: Round brilliant

Certificate IGI 171549685

Diamond specifications and retailer prices

From $327 SGD
As of October 31, 2026
Save $1,156 SGD (78%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $1,483 SGD at NZ Jewellers · As of November 2, 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 171549685. Listed at 8 retailers as of October 31, 2026, with prices from $327 to $1,483, a $1,156 spread on the same certified stone. NZ Jewellers lists it at $1,483. 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
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle34.8°
Pavilion angle41.1°
OriginNatural
Grading LabIGI
CertificateIGI 171549685
Dimensions5.10 × 5.13 × 3.17 mm
L/W Ratio1.01
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
5.10 mm5.13 mm0.51 ctN / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI 171549685
Side View
Table 57.0%Crown 34.8°Girdle: MediumPavilion 41.1°Culet: NoneDepth 62.0%

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: Oct 31
Current: $554 SGD|Low: $430 SGD|High: $557 SGD|Avg: $491 SGD|+1.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
November 3, 2026
Retailer 4$430 SGD
Retailer 3$490 SGD
Retailer 2$493 SGD
Retailer 1$554 SGD

12 data points across 4 retailers

8 retailers$327 SGD to $1,483 SGD

B+
Cheapest Retailer
-
$327 SGD
Retailer 2
-
$353 SGD
View
Price last confirmed 8 days ago
B+
Retailer 3
-
$365 SGD
View
Retailer 4
-
$430 SGD
View
Price last confirmed 11 days ago
B+
Retailer 5
-
$441 SGD
View
B+
Retailer 6
-
$493 SGD
View
B
Retailer 7
-
$554 SGD
View
Most Expensive
C
NZ Jewellers
c8903fd2-e836-4673-a49f-d24ddcc6514f · Nov 2
$1,483 SGD
$1,161 USD
View
7 more retailers have this diamond
Prices start from $327 SGDSave up to $1,156 SGD

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
$327 SGD