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Round|Natural|GIA

0.51ct K SI2 Round Natural Diamond

VG • K/SI2 • GIA 2256287166

Certificate GIA 2256287166

Diamond specifications and retailer prices

From $500 CAD
As of November 1, 2026
Save $880 CAD (64%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,289 CAD at NZ Jewellers · As of October 30, 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 very-good cut grade and certified by GIA 2256287166. Listed at 14 retailers as of November 1, 2026, with a 176% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
K
Color
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2256287166
Dimensions5.04 × 5.02 × 3.19 mm
L/W Ratio1.00
Top View
5.04 mm5.02 mm0.51 ctK / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2256287166
Side View
Table 60.0%CrownGirdle: ThickPavilionCulet: NoneDepth 63.4%

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 1
Current: $2,289 CAD|Low: $411 CAD|High: $2,289 CAD|Avg: $764 CAD|+21.9%
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
Retailer 16
November 2, 2026
Retailer 15$500 CAD
Retailer 7$566 CAD
Retailer 16$598 CAD
Retailer 5$626 CAD
Retailer 2$634 CAD
Retailer 4$644 CAD
Retailer 6$644 CAD
Retailer 3$689 CAD
Retailer 12$689 CAD
Retailer 9$730 CAD
Retailer 14$779 CAD
Retailer 8$809 CAD
Retailer 13$816 CAD
Retailer 10$905 CAD
Retailer 11$1,380 CAD
NZ Jewellers$2,289 CAD

27 data points across 16 retailers

14 retailers$500 CAD to $1,380 CAD

B+
Cheapest Retailer
-
$500 CAD
B+
Retailer 2
-
$598 CAD
View
Retailer 3
-
$626 CAD
View
Price last confirmed 10 days ago
B+
Retailer 4
-
$634 CAD
View
Retailer 5
-
$644 CAD
View
Price last confirmed 9 days ago
Retailer 6
-
$644 CAD
View
Price last confirmed 8 days ago
B+
Retailer 7
-
$689 CAD
View
B+
Retailer 8
-
$689 CAD
View
B+
Retailer 9
-
$730 CAD
View
B+
Retailer 10
-
$779 CAD
View
B+
Retailer 11
-
$816 CAD
View
B+
Retailer 12
-
$905 CAD
View
C
Retailer 13
-
$1,380 CAD
View
Most Expensive
NZ Jewellers
87419fe6-6aae-416c-bd98-9d0f1c3e7582 · Oct 30
$2,289 CAD
$1,639 USD
View
Price last confirmed 7 days ago
13 more retailers have this diamond
Prices start from $500 CADSave up to $880 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.

B+
0.51ct Round
$500 CAD