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Round|Natural|GIA

1.00ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 5366627178

Certificate GIA 5366627178

Diamond specifications and retailer prices

From €1,072 EUR
As of November 6, 2026
Save €1,813 EUR (63%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: €2,885 EUR at Allurez · As of November 5, 2026
View at Allurez

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 5366627178. Listed at 5 retailers as of November 5, 2026, with prices from €1,072 to €2,885, a €1,813 spread on the same certified stone. Allurez lists it at €2,885. 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
FluorescenceNone
Crown angle34.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 5366627178
Dimensions6.36 × 6.41 × 3.98 mm
L/W Ratio1.01
Star length45%
Lower girdle80%
Top View
6.36 mm6.41 mm1.00 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5366627178
Side View
Table 60.0%Crown 34.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 62.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: €1,072 EUR|Low: €1,072 EUR|High: €1,837 EUR|Avg: €1,541 EUR|-3.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 1€1,072 EUR
Retailer 4€1,456 EUR
Retailer 3€1,808 EUR
Retailer 2€1,824 EUR

46 data points across 4 retailers

5 retailers€1,072 EUR to €2,885 EUR

A
Cheapest Retailer
-
€1,072 EUR
B+
Retailer 2
-
€1,456 EUR
View
B+
Retailer 3
-
€1,808 EUR
View
B+
Retailer 4
-
€1,824 EUR
View
Most Expensive
B
Allurez
5737726 · Nov 5
€2,885 EUR
$3,238 USD
View
4 more retailers have this diamond
Prices start from €1,072 EURSave up to €1,813 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
€1,072 EUR