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Oonüks

Oonüks

Oonüks on mustvalge kontrastsete vöötmetega vääriskivi, kaltsedoni erim. Oonüksit võib vaadelda ahhaadi erivormina.

Oonüksi nimetus tuleneb ladinakeelsest sõnast onyx, mis tähendab sõrmeküünt või küünist.[1]

Oonüksit toodetakse kunstlikult ahhaadi värvimise teel. Kunstlikku oonüksitootmist tundsid juba Antiik-Kreeka ja -Rooma elanikud. Esialgsed hinnangud selle kaltsedoni erimi kohta on kirja pannud Plinius Vanem. Juba Minose kultuuris oli oonüks tuntud, seda kinnitab Knossose palee väljakaevamistel leitud oonüks. [2]

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Oonüks
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