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Round|Natural|GIA

1.00ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 6555414004

Certificate GIA 6555414004

Diamond specifications and retailer prices

From €1,409 EUR
As of November 5, 2026
Save €2,751 EUR (66%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €4,160 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 6555414004. Listed at 16 retailers as of November 5, 2026, with prices from €1,409 to €4,160, a €2,751 spread on the same certified stone. NZ Jewellers lists it at €4,160. 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
SymmetryExcellent
FluorescenceFaint
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6555414004
Dimensions6.32 × 6.37 × 3.96 mm
L/W Ratio1.01
Star length50%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cavity, Needle, Indented Natural, Natural
Top View
6.32 mm6.37 mm1.00 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6555414004
Side View
Table 57.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.4%

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 5
Current: €4,160 EUR|Low: €1,335 EUR|High: €4,160 EUR|Avg: €1,860 EUR|+25.9%
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
Retailer 17
November 6, 2026
Retailer 16€1,409 EUR
Retailer 3€1,491 EUR
Retailer 15€1,511 EUR
Retailer 4€1,545 EUR
Retailer 8€1,545 EUR
Retailer 17€1,607 EUR
Retailer 7€1,616 EUR
Retailer 9€1,629 EUR
Retailer 2€1,654 EUR
Retailer 5€1,666 EUR
Retailer 14€1,783 EUR
Retailer 6€1,785 EUR
Retailer 10€1,841 EUR
Retailer 13€2,191 EUR
Retailer 12€2,470 EUR
Retailer 11€2,980 EUR
NZ Jewellers€4,160 EUR

18 data points across 17 retailers

16 retailers€1,409 EUR to €4,160 EUR

A
Cheapest Retailer
-
€1,409 EUR
A
Retailer 2
-
€1,491 EUR
View
A
Retailer 3
-
€1,511 EUR
View
B+
Retailer 4
-
€1,545 EUR
View
B+
Retailer 5
-
€1,607 EUR
View
B+
Retailer 6
-
€1,616 EUR
View
Retailer 7
-
€1,629 EUR
View
Price last confirmed 22 days ago
B+
Retailer 8
-
€1,654 EUR
View
B+
Retailer 9
-
€1,666 EUR
View
B+
Retailer 10
-
€1,783 EUR
View
B+
Retailer 11
-
€1,785 EUR
View
B
Retailer 12
-
€1,841 EUR
View
B
Retailer 13
-
€2,191 EUR
View
B
Retailer 14
-
€2,470 EUR
View
B
Retailer 15
-
€2,980 EUR
View
Most Expensive
C
NZ Jewellers
7b1f8c66-e901-4452-839e-81f03380d61d · Nov 5
€4,160 EUR
$4,669 USD
View
15 more retailers have this diamond
Prices start from €1,409 EURSave up to €2,751 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.

A
1.00ct Round
€1,409 EUR