Opal<\/a> ist eine amorphe Form von Kiesels\u00e4ure mit variablem Wassergehalt. Bei Opalen unterscheidet man zwischen Edelopal, der f\u00fcr sein Farbspiel (Opaleszenz) bekannt ist, und gew\u00f6hnlichem Opal, der diesen Effekt nicht zeigt. Gew\u00f6hnlicher Opal kommt in verschiedenen Farben wie wei\u00df, rosa, blau, gr\u00fcn oder braun vor, meist mit einem wachsartigen bis glasartigen Glanz.<\/p>\n Gro\u00dfe Vorkommen gibt es in Australien, Peru, Mexiko, Brasilien und den Vereinigten Staaten. Seine chemische Formel lautet SiO\u2082-nH\u2082O. Gew\u00f6hnlicher Opal bildet sich h\u00e4ufig in vulkanischen oder sediment\u00e4ren Umgebungen. Seine H\u00e4rte liegt zwischen 5,5 und 6,5 auf der Mohs-Skala.<\/p>\n Zu den bekannten Sorten geh\u00f6ren der rosa peruanische Opal, der gr\u00fcne Opal, der schwarze Opal und der dendritische Opal, die sich durch ihre einzigartige Farbe und Einschl\u00fcsse auszeichnen.<\/p>\n Quellen: <\/strong> Gr\u00fcne Opal-Skulptur aus Madagaskar<\/p>","protected":false},"featured_media":65993,"template":"","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}}},"soort":[],"product_brand":[],"product_cat":[1348,3003],"product_tag":[1137],"class_list":{"0":"post-65992","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-unieke-producten","7":"product_cat-sculpturen-per-stuk","8":"product_tag-uniek","9":"pa_herkomst-madagaskar","10":"pa_soort-groene-opaal","11":"pa_verkoopeenheid-uniek","12":"pa_vorm-sculptuur","13":"desktop-align-center","14":"tablet-align-center","15":"mobile-align-center","16":"ast-product-gallery-layout-horizontal-slider","17":"ast-product-tabs-layout-horizontal","19":"first","20":"instock","21":"sold-individually","22":"taxable","23":"shipping-taxable","24":"product-type-simple"},"acf":[],"_links":{"self":[{"href":"https:\/\/www.ruschmineralen.nl\/de\/wp-json\/wp\/v2\/product\/65992","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ruschmineralen.nl\/de\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.ruschmineralen.nl\/de\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ruschmineralen.nl\/de\/wp-json\/wp\/v2\/media\/65993"}],"wp:attachment":[{"href":"https:\/\/www.ruschmineralen.nl\/de\/wp-json\/wp\/v2\/media?parent=65992"}],"wp:term":[{"taxonomy":"soort","embeddable":true,"href":"https:\/\/www.ruschmineralen.nl\/de\/wp-json\/wp\/v2\/soort?post=65992"},{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.ruschmineralen.nl\/de\/wp-json\/wp\/v2\/product_brand?post=65992"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.ruschmineralen.nl\/de\/wp-json\/wp\/v2\/product_cat?post=65992"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.ruschmineralen.nl\/de\/wp-json\/wp\/v2\/product_tag?post=65992"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
Mindat.org<\/a>, Gemdat.org<\/a>, Wikipedia - Opal<\/a><\/small><\/p>","protected":false},"excerpt":{"rendered":"