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Round|Natural|GIA

1.09ct K VS1 Round Natural Diamond

EX • K/VS1 • GIA 6421853820

Certificate GIA 6421853820

Diamond specifications and retailer prices

From $2,979 CAD
As of November 4, 2026
Save $1,608 CAD (35%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $4,587 CAD at 77 Diamonds · As of November 6, 2026
View at 77 Diamonds

About this 1.09ct natural round diamond

This 1.09ct natural round sits in the classic one-carat band, graded K colour (faint-tinted) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by GIA 6421853820. Listed at 5 retailers as of November 4, 2026, with prices from $2,979 to $4,587, a $1,608 spread on the same certified stone. 77 Diamonds lists it at $4,587. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.09
Carat
K
Color
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6421853820
Dimensions6.54 × 6.49 × 4.08 mm
L/W Ratio1.01
Star length55%
Lower girdle75%
Top View
6.54 mm6.49 mm1.09 ctK / VS1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 6421853820
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.5%

Caratlytics Score

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

Price History

Last verified: Nov 4
Current: $4,587 CAD|Low: $2,867 CAD|High: $4,655 CAD|Avg: $3,640 CAD|+4.2%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 4$2,979 CAD
Retailer 3$3,086 CAD
Retailer 5$3,292 CAD
Retailer 2$4,497 CAD
77 Diamonds$4,587 CAD

42 data points across 5 retailers

5 retailers$2,979 CAD to $4,587 CAD

A
Cheapest Retailer
-
$2,979 CAD
A
Retailer 2
-
$3,086 CAD
View
B+
Retailer 3
-
$3,292 CAD
View
B
Retailer 4
-
$4,497 CAD
View
Most Expensive
B
77 Diamonds
RBZAK82VKEA · Nov 6
$4,587 CAD
£2,586 GBP
View
4 more retailers have this diamond
Prices start from $2,979 CADSave up to $1,608 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
1.09ct Round
$2,979 CAD