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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 $3,794 NZD
As of November 6, 2026
Save $2,048 NZD (35%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $5,843 NZD 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 6, 2026, with prices from $3,794 to $5,843, a $2,048 spread on the same certified stone. 77 Diamonds lists it at $5,843. 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
Colour
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 6
Current: $5,843 NZD|Low: $3,652 NZD|High: $5,930 NZD|Avg: $4,636 NZD|+4.2%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 4$3,794 NZD
Retailer 3$3,931 NZD
Retailer 5$4,193 NZD
Retailer 2$5,728 NZD
77 Diamonds$5,843 NZD

42 data points across 5 retailers

5 retailers$3,794 NZD to $5,843 NZD

A
Cheapest Retailer
-
$3,794 NZD
A
Retailer 2
-
$3,931 NZD
View
B+
Retailer 3
-
$4,193 NZD
View
B
Retailer 4
-
$5,728 NZD
View
Most Expensive
B
77 Diamonds
RBZAK82VKEA · Nov 6
$5,843 NZD
£2,586 GBP
View
4 more retailers have this diamond
Prices start from $3,794 NZDSave up to $2,048 NZD

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
$3,794 NZD