{"id":7875,"date":"2022-04-05T12:13:40","date_gmt":"2022-04-05T10:13:40","guid":{"rendered":"https:\/\/ssef.ch\/?p=7875"},"modified":"2023-09-21T15:30:35","modified_gmt":"2023-09-21T13:30:35","slug":"natural-pearl-necklace-with-one-imitation-pearl","status":"publish","type":"post","link":"https:\/\/www.ssef.ch\/jp\/natural-pearl-necklace-with-one-imitation-pearl\/","title":{"rendered":"Natural pearl necklace with one imitation pearl"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"7875\" class=\"elementor elementor-7875\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-472506a1 elementor-section-boxed elementor-section-height-default elementor-section-height-default qodef-backgound-letter-holder-no qodef-elementor-content-no\" data-id=\"472506a1\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-607c630a\" data-id=\"607c630a\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-58d7c87d elementor-widget elementor-widget-text-editor\" data-id=\"58d7c87d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\n<p>by Dr. M.S. Krzemnicki, first published in\u00a0<a href=\"https:\/\/www.ssef.ch\/wp-content\/uploads\/2021\/06\/facette-2021-web.pdf\">Facette 27<\/a>\u00a0(June 2021)<\/p>\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"643\" class=\"wp-image-7992\" src=\"https:\/\/www.ssef.ch\/wp-content\/uploads\/2022\/03\/420_1_pearl-necklace.jpeg\" alt=\"\" srcset=\"https:\/\/www.ssef.ch\/wp-content\/uploads\/2022\/03\/420_1_pearl-necklace.jpeg 1024w, https:\/\/www.ssef.ch\/wp-content\/uploads\/2022\/03\/420_1_pearl-necklace-300x188.webp 300w, https:\/\/www.ssef.ch\/wp-content\/uploads\/2022\/03\/420_1_pearl-necklace-768x482.webp 768w, https:\/\/www.ssef.ch\/wp-content\/uploads\/2022\/03\/420_1_pearl-necklace-700x440.jpeg 700w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\n<figcaption><strong>Figure 1:<\/strong> Natural pearl necklace containing one imitation pearl. Photo: A. Chalain, SSEF.<\/figcaption>\n<\/figure>\n\n<p>Even after having tested literally hundreds of natural pearl necklaces in the lab, it does not mean that we can\u2019t expect surprises.<\/p>\n\n<p>In the last SSEF Facette (No. 26, page 40) we described the astonishing case of a cultured pearl necklace with one natural pearl mixed into the pearl strand. As a recent addition to this club of extravaganza, we can present this year the following beautiful pearl necklace (Figure 1). Our testing not only revealed the presence of 40 natural pearls of a quite remarkable diameter (8-11 mm), but in addition one imitation pearl consisting of a plastic bead covered by a \u2018lacquer\u2019 coating that seeks to mimic a pearly lustre (Figure 1). Interestingly, the imitation was mostly transparent to X-rays, which had all SSEF gemmologists gravitating towards the black &#8216;hole&#8217; present in the radiography of this necklace (Figure 2). It was only through the brave intervention of Luke Pearlwalker that we could avoid larger damage to our team.<\/p>\n\n<p>As these cases show, the addition or substitution of a pearl during repair and restringing of a pearl necklace obviously may sometimes lead to surprising results.<\/p>\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1004\" height=\"1004\" class=\"wp-image-7995\" src=\"https:\/\/www.ssef.ch\/wp-content\/uploads\/2022\/03\/420_2_pearl-imitation.jpg\" alt=\"\" srcset=\"https:\/\/www.ssef.ch\/wp-content\/uploads\/2022\/03\/420_2_pearl-imitation.jpg 1004w, https:\/\/www.ssef.ch\/wp-content\/uploads\/2022\/03\/420_2_pearl-imitation-150x150.jpg 150w, https:\/\/www.ssef.ch\/wp-content\/uploads\/2022\/03\/420_2_pearl-imitation-300x300.jpg 300w, https:\/\/www.ssef.ch\/wp-content\/uploads\/2022\/03\/420_2_pearl-imitation-768x768.jpg 768w, https:\/\/www.ssef.ch\/wp-content\/uploads\/2022\/03\/420_2_pearl-imitation-570x570.jpg 570w, https:\/\/www.ssef.ch\/wp-content\/uploads\/2022\/03\/420_2_pearl-imitation-500x500.jpg 500w, https:\/\/www.ssef.ch\/wp-content\/uploads\/2022\/03\/420_2_pearl-imitation-1000x1000.jpg 1000w, https:\/\/www.ssef.ch\/wp-content\/uploads\/2022\/03\/420_2_pearl-imitation-700x700.jpg 700w\" sizes=\"(max-width: 1004px) 100vw, 1004px\" \/>\n<figcaption><strong>Figure 2:<\/strong> The imitation pearl is strung between these two natural pearls partially visible on the top and bottom of this radiography. As the imitation pearl is transparent to X-rays, it leaves a black \u2018hole\u2019 between these two natural pearls strung on the pearl strand. Photo: SSEF.<\/figcaption>\n<\/figure>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-62af413 elementor-section-boxed elementor-section-height-default elementor-section-height-default qodef-backgound-letter-holder-no qodef-elementor-content-no\" data-id=\"62af413\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-3141f7b\" data-id=\"3141f7b\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-0bad50b elementor-widget elementor-widget-text-editor\" data-id=\"0bad50b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>Want to learn more about pearls?<\/h2>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-30b2c01 elementor-widget elementor-widget-image\" data-id=\"30b2c01\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1024\" height=\"694\" src=\"https:\/\/www.ssef.ch\/wp-content\/uploads\/2023\/07\/cta-pearl-course.jpeg\" class=\"attachment-large size-large wp-image-33478\" alt=\"\" srcset=\"https:\/\/www.ssef.ch\/wp-content\/uploads\/2023\/07\/cta-pearl-course.jpeg 1024w, https:\/\/www.ssef.ch\/wp-content\/uploads\/2023\/07\/cta-pearl-course-300x203.webp 300w, https:\/\/www.ssef.ch\/wp-content\/uploads\/2023\/07\/cta-pearl-course-768x521.webp 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-80fd297\" data-id=\"80fd297\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3e87959 elementor-widget elementor-widget-text-editor\" data-id=\"3e87959\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h4>Start your journey to becoming an pearl expert with our free online course &#8220;Introduction to pearls&#8221;.<\/h4><p>Learn all about pearls. Their fascinating history, how they form, where they come from. Learn about all the different origins of pearls and their treatments. Take this course as an introduction to the wonderful world of pearls.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-93308d6 elementor-widget elementor-widget-laurits_core_button\" data-id=\"93308d6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"laurits_core_button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<a class=\"qodef-shortcode qodef-m qodef-button qodef-layout--filled qodef-html--link\" href=\"https:\/\/www.ssef.ch\/masterclass\/pearl-en\/\" target=\"_self\"  >\n\t<span class=\"qodef-m-text\">Discover the course<\/span>\n<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Our testing not only revealed the presence of 40 natural pearls of a quite remarkable diameter (8-11 mm), but in addition one imitation pearl consisting of a plastic bead covered by a \u2018lacquer\u2019 coating that seeks to mimic a pearly lustre.<\/p>\n","protected":false},"author":9,"featured_media":7992,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[626],"tags":[724],"library_category":[],"library_author":[],"class_list":["post-7875","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-research-blog","tag-pearl"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - 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