Opal<\/a> is an amorphous form of silica with variable water content. Within opals, a distinction is made between precious opal, which is known for its play of colours (opalescence), and ordinary opal, which does not show this effect. Common opal occurs in various colours such as white, pink, blue, green or brown, usually with a waxy to glassy luster.<\/p>\n Major deposits include Australia, Peru, Mexico, Brazil and the United States. Its chemical formula is SiO\u2082-nH\u2082O. Common opal often forms in volcanic or sedimentary environments. Its hardness is between 5.5 and 6.5 on the Mohs scale.<\/p>\n Well-known varieties include pink Peruvian opal, green opal, Black opal and dendritic opal, which are distinguished by their unique colour and inclusions.<\/p>\n Sources: <\/strong> Our necklaces are available in various designs, including faceted, ball, split and knotted necklaces. Currently, all necklaces in our range are 45 cm long, which corresponds to a standard wearing length for most neck sizes. The beads or slivers used vary in shape and finish, giving each necklace a unique character. <\/p>\n The bead size varies depending on the type of chain, from around 4 mm in finer models to around 8 mm in the somewhat coarser versions. For split necklaces, uneven pieces of stone are used, with the split used varying from 5 to 10 mm, giving a natural look. Knotted necklaces feature a knot between the beads, which is not only decorative but also contributes to the strength of the jewellery. <\/p>\n Keep in mind that not every variety is available in all designs or bead sizes. <\/p>\n<\/p>","protected":false},"excerpt":{"rendered":" Pink Opal Split Necklace from China<\/p>","protected":false},"featured_media":53597,"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":[3025],"product_tag":[],"class_list":{"0":"post-53697","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-splitkettingen","7":"pa_herkomst-china","8":"pa_maat-45-cm","9":"pa_maat-split","10":"pa_soort-roze-opaal","11":"pa_verkoopeenheid-per-stuk","12":"pa_vorm-ketting","13":"pa_vorm-splitketting","14":"desktop-align-center","15":"tablet-align-center","16":"mobile-align-center","17":"ast-product-gallery-layout-horizontal-slider","18":"ast-product-tabs-layout-horizontal","20":"first","21":"outofstock","22":"taxable","23":"shipping-taxable","24":"product-type-simple"},"acf":[],"_links":{"self":[{"href":"https:\/\/www.ruschmineralen.nl\/en\/wp-json\/wp\/v2\/product\/53697","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ruschmineralen.nl\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.ruschmineralen.nl\/en\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ruschmineralen.nl\/en\/wp-json\/wp\/v2\/media\/53597"}],"wp:attachment":[{"href":"https:\/\/www.ruschmineralen.nl\/en\/wp-json\/wp\/v2\/media?parent=53697"}],"wp:term":[{"taxonomy":"soort","embeddable":true,"href":"https:\/\/www.ruschmineralen.nl\/en\/wp-json\/wp\/v2\/soort?post=53697"},{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.ruschmineralen.nl\/en\/wp-json\/wp\/v2\/product_brand?post=53697"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.ruschmineralen.nl\/en\/wp-json\/wp\/v2\/product_cat?post=53697"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.ruschmineralen.nl\/en\/wp-json\/wp\/v2\/product_tag?post=53697"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
Mindat.org<\/a>, Gemdat.org<\/a>, Wikipedia - Opal<\/a><\/small><\/p>\n