{"id":776,"date":"2026-02-16T10:48:57","date_gmt":"2026-02-16T08:48:57","guid":{"rendered":"https:\/\/knminerals.hu\/?post_type=enciklopedia&#038;p=776"},"modified":"2026-02-20T11:13:32","modified_gmt":"2026-02-20T09:13:32","slug":"ametiszt","status":"publish","type":"enciklopedia","link":"https:\/\/knminerals.hu\/en\/enciklopedia\/ametiszt\/","title":{"rendered":"Amethyst"},"content":{"rendered":"<p><strong>Minerals Department:<\/strong> Silicates<br><strong>Chemical formula:<\/strong> SiO\u2082<br><strong>Crystal system:<\/strong> Trigonal<br><strong>Colour variations:<\/strong> From light purple to deep violet<br><strong>Mohs hardness:<\/strong> 7<br><strong>Fission:<\/strong> no cleavage, fracture shell-shaped<br><strong>Race weight:<\/strong> 2.65 g\/cm\u00b3<\/p>\n\n\n\n<p>Amethyst is perhaps one of the most popular varieties of quartz. Its variegated, sometimes zoned, purple colour is due to the combination of trace elements of iron and titanium incorporated into the crystal lattice and the background radiation that hits the crystals.<\/p>\n\n\n\n<p><strong>Etymology:<\/strong><\/p>\n\n\n\n<p>The name amethyst comes from the Greek word \u201eamethystos\u201d, meaning \u201enot drunk\u201d, \u201enot intoxicating\u201d. It takes its name from the ancient belief that amethyst protected against the intoxicating effects of alcohol.<\/p>","protected":false},"featured_media":747,"template":"","meta":{"_acf_changed":true},"categories":[69],"class_list":["post-776","enciklopedia","type-enciklopedia","status-publish","has-post-thumbnail","hentry","category-altalanos"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.5 (Yoast SEO v27.5) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Ametiszt - knminerals.hu<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/knminerals.hu\/en\/enciklopedia\/ametiszt\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ametiszt\" \/>\n<meta property=\"og:description\" content=\"\u00c1sv\u00e1nyoszt\u00e1ly: Szilik\u00e1tokK\u00e9miai k\u00e9plet: SiO\u2082Krist\u00e1lyrendszer: Trigon\u00e1lisSz\u00ednv\u00e1ltozatok: Vil\u00e1goslil\u00e1t\u00f3l a m\u00e9ly iboly\u00e1igMohs-f\u00e9le kem\u00e9nys\u00e9g: 7Hasad\u00e1s: nem hasad, t\u00f6r\u00e9se kagyl\u00f3sFajs\u00faly: 2,65 g\/cm\u00b3 Az ametiszt a\" \/>\n<meta property=\"og:url\" content=\"https:\/\/knminerals.hu\/en\/enciklopedia\/ametiszt\/\" \/>\n<meta property=\"og:site_name\" content=\"knminerals.hu\" \/>\n<meta property=\"article:modified_time\" content=\"2026-02-20T09:13:32+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/knminerals.hu\/wp-content\/uploads\/2026\/02\/3_1-scaled.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"2560\" \/>\n\t<meta property=\"og:image:height\" content=\"2560\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/knminerals.hu\\\/enciklopedia\\\/ametiszt\\\/\",\"url\":\"https:\\\/\\\/knminerals.hu\\\/enciklopedia\\\/ametiszt\\\/\",\"name\":\"Ametiszt - 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