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Round|Natural|GIA

1.00ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 6505412227

Certificate GIA 6505412227

Diamond specifications and retailer prices

From $2,253 CAD
As of November 4, 2026
Save $3,885 CAD (63%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $6,138 CAD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6505412227. Listed at 16 retailers as of November 4, 2026, with prices from $2,253 to $6,138, a $3,885 spread on the same certified stone. NZ Jewellers lists it at $6,138. 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

1.00
Carat
K
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle31.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6505412227
Dimensions6.47 × 6.43 × 3.92 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
6.47 mm6.43 mm1.00 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6505412227
Side View
Table 59.0%Crown 31.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 60.8%

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: $2,408 CAD|Low: $2,207 CAD|High: $4,462 CAD|Avg: $2,874 CAD|-1.7%
Retailer 1
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$2,253 CAD
Retailer 3$2,293 CAD
Retailer 10$2,332 CAD
Retailer 1$2,408 CAD
Retailer 12$2,525 CAD
Retailer 2$2,598 CAD
Retailer 4$2,633 CAD
Retailer 8$2,776 CAD
Retailer 5$2,917 CAD
Retailer 7$3,071 CAD
Retailer 6$3,409 CAD
Retailer 9$4,396 CAD

37 data points across 12 retailers

16 retailers$2,253 CAD to $6,138 CAD

A
Cheapest Retailer
-
$2,253 CAD
A
Retailer 2
-
$2,293 CAD
View
A
Retailer 3
-
$2,332 CAD
View
A
Retailer 4
-
$2,408 CAD
View
Retailer 5
-
$2,517 CAD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
$2,517 CAD
View
B+
Retailer 7
-
$2,525 CAD
View
B+
Retailer 8
-
$2,598 CAD
View
B+
Retailer 9
-
$2,633 CAD
View
B+
Retailer 10
-
$2,776 CAD
View
B+
Retailer 11
-
$2,904 CAD
View
B+
Retailer 12
-
$2,917 CAD
View
B+
Retailer 13
-
$3,071 CAD
View
B
Retailer 14
-
$3,409 CAD
View
B
Retailer 15
-
$4,396 CAD
View
Most Expensive
B
NZ Jewellers
86dc830f-720d-427e-b48b-c56f5dd959f7 · Nov 5
$6,138 CAD
$4,395 USD
View
15 more retailers have this diamond
Prices start from $2,253 CADSave up to $3,885 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
1.00ct Round
$2,253 CAD