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Round|Natural|GIA

0.55ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 1255439370

Certificate GIA 1255439370

Diamond specifications and retailer prices

From $831 CAD
As of November 4, 2026
Save $1,297 CAD (61%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $2,894 CAD at NZ Jewellers · As of November 4, 2026
View at NZ Jewellers

About this 0.55ct natural round diamond

This 0.55ct 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 1255439370. Listed at 10 retailers as of November 4, 2026, with a 156% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.55
Carat
K
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1255439370
Dimensions5.26 × 5.23 × 3.26 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
5.26 mm5.23 mm0.55 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1255439370
Side View
Table 58.0%Crown 35.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.2%

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 4
Current: $2,894 CAD|Low: $831 CAD|High: $2,894 CAD|Avg: $1,294 CAD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 3$831 CAD
Retailer 8$837 CAD
Retailer 6$870 CAD
Retailer 7$901 CAD
Retailer 10$901 CAD
Retailer 9$965 CAD
Retailer 2$1,120 CAD
Retailer 5$1,256 CAD
Retailer 4$2,128 CAD
NZ Jewellers$2,894 CAD

41 data points across 10 retailers

10 retailers$831 CAD to $2,128 CAD

A
Cheapest Retailer
-
$831 CAD
B+
Retailer 2
-
$837 CAD
View
B+
Retailer 3
-
$870 CAD
View
Retailer 4
-
$901 CAD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$901 CAD
View
B+
Retailer 6
-
$965 CAD
View
B
Retailer 7
-
$1,120 CAD
View
B
Retailer 8
-
$1,256 CAD
View
B
Retailer 9
-
$2,128 CAD
View
Most Expensive
NZ Jewellers
a4a68796-f60c-4280-b19c-15829ead3b87 · Nov 4
$2,894 CAD
$2,072 USD
View
Price under review
9 more retailers have this diamond
Prices start from $831 CADSave up to $1,297 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
0.55ct Round
$831 CAD