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Round|Natural|GIA

1.00ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 6422805013

Certificate GIA 6422805013

Diamond specifications and retailer prices

From €1,556 EUR
As of November 6, 2026
Save €2,419 EUR (61%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: €3,975 EUR 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6422805013. Listed at 17 retailers as of November 5, 2026, with prices from €1,556 to €3,975, a €2,419 spread on the same certified stone. NZ Jewellers lists it at €3,975. 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
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6422805013
Dimensions6.39 × 6.33 × 4.00 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
6.39 mm6.33 mm1.00 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6422805013
Side View
Table 55.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.8%

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 6
Current: €3,975 EUR|Low: €1,556 EUR|High: €3,975 EUR|Avg: €2,084 EUR
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 6, 2026
Retailer 4€1,556 EUR
Retailer 12€1,590 EUR
Retailer 5€1,661 EUR
Retailer 13€1,722 EUR
Retailer 16€1,722 EUR
Retailer 6€1,779 EUR
Retailer 15€1,802 EUR
Retailer 2€1,844 EUR
Retailer 14€1,889 EUR
Retailer 3€1,896 EUR
Retailer 7€1,988 EUR
Retailer 8€1,993 EUR
Retailer 9€2,054 EUR
Retailer 10€2,443 EUR
Retailer 11€3,321 EUR
NZ Jewellers€3,975 EUR

28 data points across 16 retailers

17 retailers€1,556 EUR to €3,975 EUR

B+
Cheapest Retailer
-
€1,556 EUR
B+
Retailer 2
-
€1,590 EUR
View
B+
Retailer 3
-
€1,661 EUR
View
Retailer 4
-
€1,722 EUR
View
Price last confirmed 8 days ago
B+
Retailer 5
-
€1,722 EUR
View
B+
Retailer 6
-
€1,779 EUR
View
B+
Retailer 7
-
€1,802 EUR
View
B+
Retailer 8
-
€1,844 EUR
View
B+
Retailer 9
-
€1,860 EUR
View
B+
Retailer 10
-
€1,889 EUR
View
B+
Retailer 11
-
€1,896 EUR
View
B
Retailer 12
-
€1,988 EUR
View
B
Retailer 13
-
€1,993 EUR
View
B
Retailer 14
-
€2,054 EUR
View
B
Retailer 15
-
€2,443 EUR
View
B
Retailer 16
-
€3,321 EUR
View
Most Expensive
C
NZ Jewellers
01c352bc-f1d1-41cf-8e2a-01090afa6836 · Nov 5
€3,975 EUR
$4,462 USD
View
16 more retailers have this diamond
Prices start from €1,556 EURSave up to €2,419 EUR

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+
1.00ct Round
€1,556 EUR