{"id":372,"date":"2013-05-18T15:11:52","date_gmt":"2013-05-18T15:11:52","guid":{"rendered":"http:\/\/riddgem.se\/blogg\/?p=372"},"modified":"2013-10-17T11:08:33","modified_gmt":"2013-10-17T11:08:33","slug":"alexandrit","status":"publish","type":"post","link":"https:\/\/riddgem.se\/blogg\/alexandrit\/","title":{"rendered":"Alexandrit"},"content":{"rendered":"
\"\"<\/div>\n
\n

Mineral grupp: Krysoberyll
\nKemi: BeAl2O4
\nF\u00e4rg: Guld-gul, gr\u00f6n-gul, gr\u00f6n, brun, r\u00f6d
\nKristallsystem: Ortorombisk
\nMohs h\u00e5rdhet: 8,5
\nLjusbrytning: 1.746 – 1.763
\nDubbelbrytning: 0.007 – .011
\nDensitet: 3,70-3,78<\/p>\n

Kan f\u00f6rv\u00e4xlas med:<\/p>\n

Syntetisk Safir, syntetisk spinell, andalusit, pyrop granat och det finns \u00e4ven syntetisk alexandrit \u00e4ven om man is\u00e5fall oftare anv\u00e4nder f\u00e4rgv\u00e4xlande syntetisk safir vilken \u00e4r billigare.<\/p>\n

Behandlingar:<\/p>\n

Normalt sett \u00e4r alexandrit obehandlad och \u00e4ven om f\u00f6rs\u00f6k gjorts s\u00e5 f\u00f6refaller man inte kunna f\u00f6rst\u00e4rka f\u00e4rgv\u00e4xlingseffekten med behandling med v\u00e4rme. F\u00f6r stenar av l\u00e4gre kvalitet har man ibland anv\u00e4nt olja f\u00f6r att d\u00f6lja sprickor.<\/p>\n

L\u00e4mpliga instrument f\u00f6r ID:<\/p>\n

Mikroskop\/Lupp kan\u00a0visa de f\u00f6r alexandrit typiska inneslutningarna.<\/p>\n

Chelsea filter kan ocks\u00e5 vara anv\u00e4ndbart d\u00e5\u00a0alexandrit blir\u00a0r\u00f6d pga sitt krom inneh\u00e5ll.<\/p>\n

F\u00e4rgv\u00e4xlingseffekten i olika ljus \u00e4r den viktigaste egenskapen att konstatera (ingen f\u00e4rgv\u00e4xling=ingen alexandrit). D\u00e4rvid f\u00e5r man jmf mellan dagsljus och lampljus (ej Led).
\nRefraktometer och\u00a0 densitetsm\u00e4tning \u00e4r ocks\u00e5 viktiga verktyg.
\nK\u00e4nda fyndplatser:<\/p>\n

Hittades f\u00f6rsta g\u00e5ng i uralbergen 1830 och fick sitt namn efter Tsar Alexander II. Dock \u00e4r de ryska fyndigheterna i dagsl\u00e4get utbrutna och numera finns de st\u00f6rsta fyndigheterna i Sri Lanka, Zimbabwe och Brasilien. \u00c4ven Burma, Madagaskar och Tanzania har fyndigheter av betydelse.<\/p>\n

Kuriosa\/\u00d6vrigt:
\n\u00a0<\/p>\n

Den hittills st\u00f6rsta funna alexandriten blev funnen p\u00e5 Sri Lanka 1876 och det st\u00f6rsta slipade exemplaret v\u00e4ger 66 carat och finns p\u00e5 Smithsonian Institution in Washington DC.<\/p>\n<\/div>\n

I v\u00e5r butik hittar du alltid \u00e4delstenar och tillbeh\u00f6r av h\u00f6g kvalitet. Bes\u00f6k https:\/\/www.riddgem.se\/<\/a><\/p>","protected":false},"excerpt":{"rendered":"

Mineral grupp: Krysoberyll Kemi: BeAl2O4 F\u00e4rg: Guld-gul, gr\u00f6n-gul, gr\u00f6n, brun, r\u00f6d Kristallsystem: Ortorombisk Mohs h\u00e5rdhet: 8,5 Ljusbrytning: 1.746 – 1.763<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_crdt_document":"","jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[1,11],"tags":[],"class_list":{"1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"hentry","6":"category-nytt","7":"category-adla-stenar"},"aioseo_notices":[],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p3bowV-60","jetpack_sharing_enabled":true,"jetpack-related-posts":[],"jetpack_likes_enabled":true,"_links":{"self":[{"href":"https:\/\/riddgem.se\/blogg\/wp-json\/wp\/v2\/posts\/372","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/riddgem.se\/blogg\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/riddgem.se\/blogg\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/riddgem.se\/blogg\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/riddgem.se\/blogg\/wp-json\/wp\/v2\/comments?post=372"}],"version-history":[{"count":6,"href":"https:\/\/riddgem.se\/blogg\/wp-json\/wp\/v2\/posts\/372\/revisions"}],"predecessor-version":[{"id":379,"href":"https:\/\/riddgem.se\/blogg\/wp-json\/wp\/v2\/posts\/372\/revisions\/379"}],"wp:attachment":[{"href":"https:\/\/riddgem.se\/blogg\/wp-json\/wp\/v2\/media?parent=372"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/riddgem.se\/blogg\/wp-json\/wp\/v2\/categories?post=372"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/riddgem.se\/blogg\/wp-json\/wp\/v2\/tags?post=372"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}