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Round|Natural|GIA

0.51ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 2397005218

Certificate GIA 2397005218

Diamond specifications and retailer prices

From $465 CAD
As of November 5, 2026
Save $1,318 CAD (74%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,783 CAD 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2397005218. Listed at 11 retailers as of November 4, 2026, with prices from $465 to $1,783, a $1,318 spread on the same certified stone. NZ Jewellers lists it at $1,783. 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
K
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2397005218
Dimensions5.09 × 5.05 × 3.20 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
5.09 mm5.05 mm0.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2397005218
Side View
Table 56.0%Crown 36.5°Girdle: Sli. ThickPavilion 41°Culet: NoneDepth 63.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $1,783 CAD|Low: $465 CAD|High: $1,817 CAD|Avg: $760 CAD|-1.8%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 11$465 CAD
Retailer 8$501 CAD
Retailer 3$510 CAD
Retailer 9$518 CAD
Retailer 7$556 CAD
Retailer 2$591 CAD
Retailer 10$626 CAD
Retailer 4$669 CAD
Retailer 12$744 CAD
Retailer 5$860 CAD
Retailer 6$1,073 CAD
NZ Jewellers$1,783 CAD

44 data points across 12 retailers

11 retailers$465 CAD to $1,783 CAD

A
Cheapest Retailer
-
$465 CAD
Retailer 2
-
$501 CAD
View
Price last confirmed 8 days ago
A
Retailer 3
-
$518 CAD
View
A
Retailer 4
-
$556 CAD
View
A
Retailer 5
-
$591 CAD
View
B+
Retailer 6
-
$626 CAD
View
B+
Retailer 7
-
$669 CAD
View
B+
Retailer 8
-
$744 CAD
View
B+
Retailer 9
-
$860 CAD
View
B+
Retailer 10
-
$1,073 CAD
View
Most Expensive
C
NZ Jewellers
fef7c7c6-ef8f-4fad-bd92-ac9859a163fb · Nov 4
$1,783 CAD
$1,277 USD
View
10 more retailers have this diamond
Prices start from $465 CADSave up to $1,318 CAD

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
$465 CAD