{"id":13796,"date":"2019-04-26T15:08:53","date_gmt":"2019-04-26T18:08:53","guid":{"rendered":"https:\/\/feninjer.com.br\/?p=13796"},"modified":"2019-04-26T15:08:53","modified_gmt":"2019-04-26T18:08:53","slug":"os-diferentes-tipos-de-gemas","status":"publish","type":"post","link":"https:\/\/feninjer.com.br\/?p=13796","title":{"rendered":"Os diferentes tipos de gemas"},"content":{"rendered":"<p><em>Informar corretamente as caracter\u00edsticas dos materiais gemol\u00f3gicos \u00e9 obriga\u00e7\u00e3o de todas as joalherias<\/em><\/p>\n<p><strong>Por Erica Mendes<\/strong><\/p>\n<p>Em geral, todos os materiais gemol\u00f3gicos comumente comercializados possuem defini\u00e7\u00f5es e nomenclaturas indicadas em normas t\u00e9cnicas espec\u00edficas nacionais, a exemplo da ABNT, e internacionais, como ISO e CIBJO. E, \u00e9 obriga\u00e7\u00e3o das joalherias especificarem corretamente quais s\u00e3o os tipos que est\u00e3o adornando a joia, tanto durante a venda quanto na emiss\u00e3o dos certificados de garantia.<\/p>\n<p>Para auxiliar a equipe de vendas, preparamos um guia, baseado no Manual T\u00e9cnico de Gemas editado e publicado pelo IBGM:<\/p>\n<p><strong>Materiais gemol\u00f3gicos naturais<\/strong><\/p>\n<p>S\u00e3o aqueles inteiramente formados pela natureza, sem interfer\u00eancia do homem. Os de <strong>origem inorg\u00e2nica<\/strong> s\u00e3o os minerais e as rochas, e os <strong>org\u00e2nicos <\/strong>s\u00e3o os de origem animal ou vegetal.<\/p>\n<figure id=\"attachment_13797\" aria-describedby=\"caption-attachment-13797\" style=\"width: 586px\" class=\"wp-caption alignnone\"><img fetchpriority=\"high\" decoding=\"async\" class=\"size-full wp-image-13797\" src=\"https:\/\/feninjer.com.br\/wp-content\/uploads\/2019\/04\/A\u0302mbar-e\u0301-uma-gema-natural-orga\u0302nica.jpg\" alt=\"\" width=\"586\" height=\"416\" srcset=\"https:\/\/feninjer.com.br\/wp-content\/uploads\/2019\/04\/A\u0302mbar-e\u0301-uma-gema-natural-orga\u0302nica.jpg 586w, https:\/\/feninjer.com.br\/wp-content\/uploads\/2019\/04\/A\u0302mbar-e\u0301-uma-gema-natural-orga\u0302nica-360x256.jpg 360w, https:\/\/feninjer.com.br\/wp-content\/uploads\/2019\/04\/A\u0302mbar-e\u0301-uma-gema-natural-orga\u0302nica-570x405.jpg 570w\" sizes=\"(max-width: 586px) 100vw, 586px\" \/><figcaption id=\"caption-attachment-13797\" class=\"wp-caption-text\">\u00c2mbar \u00e9 uma gema natural org\u00e2nica<\/figcaption><\/figure>\n<p><strong>Gemas naturais<\/strong><\/p>\n<p>S\u00e3o denominadas <strong>gemas naturais<\/strong> as subst\u00e2ncias naturais org\u00e2nicas ou inorg\u00e2nicas que, por suas caracter\u00edsticas intr\u00ednsecas (cor, brilho, raridade, dureza e outros), s\u00e3o utilizadas, principalmente, como adorno pessoal.<\/p>\n<p><strong>Materiais ornamentais<\/strong><\/p>\n<p>S\u00e3o as rochas naturais ou os minerais utilizados, principalmente, para cole\u00e7\u00f5es, esculturas, decora\u00e7\u00f5es de interiores e como acabamento arquitet\u00f4nico.<\/p>\n<p><strong>Gemas artificiais<\/strong><\/p>\n<p>S\u00e3o os exemplares criados e fabricados pelo homem, sem ter um correspondente na natureza.<\/p>\n<figure id=\"attachment_13798\" aria-describedby=\"caption-attachment-13798\" style=\"width: 586px\" class=\"wp-caption alignnone\"><img decoding=\"async\" class=\"size-full wp-image-13798\" src=\"https:\/\/feninjer.com.br\/wp-content\/uploads\/2019\/04\/Zirco\u0302nia-Cu\u0301bica-e\u0301-uma-gema-artificial.jpg\" alt=\"\" width=\"586\" height=\"416\" srcset=\"https:\/\/feninjer.com.br\/wp-content\/uploads\/2019\/04\/Zirco\u0302nia-Cu\u0301bica-e\u0301-uma-gema-artificial.jpg 586w, https:\/\/feninjer.com.br\/wp-content\/uploads\/2019\/04\/Zirco\u0302nia-Cu\u0301bica-e\u0301-uma-gema-artificial-360x256.jpg 360w, https:\/\/feninjer.com.br\/wp-content\/uploads\/2019\/04\/Zirco\u0302nia-Cu\u0301bica-e\u0301-uma-gema-artificial-570x405.jpg 570w\" sizes=\"(max-width: 586px) 100vw, 586px\" \/><figcaption id=\"caption-attachment-13798\" class=\"wp-caption-text\">Zirc\u00f4nia C\u00fabica \u00e9 uma gema artificial<\/figcaption><\/figure>\n<p><strong>Gemas sint\u00e9ticas<\/strong><\/p>\n<p>Tamb\u00e9m conhecidas como \u2018<strong>gemas criadas em laborat\u00f3rio<\/strong> <strong>(lab grown)\u2019<\/strong>, s\u00e3o os produtos cristalizados cuja fabrica\u00e7\u00e3o foi ocasionada pelo homem independentemente do m\u00e9todo utilizado. Suas propriedades f\u00edsicas, qu\u00edmicas e estrutura cristalina correspondem essencialmente \u00e0s das gemas naturais.<\/p>\n<p><strong>Gemas compostas<\/strong><\/p>\n<p>S\u00e3o corpos cristalinos ou amorfos, compostos de duas ou mais partes unidas por cimenta\u00e7\u00e3o, ou qualquer outro m\u00e9todo artificial. Seus componentes podem ser tanto gemas naturais, sint\u00e9ticas ou artificiais, como tamb\u00e9m vidro.<\/p>\n<p>A gem\u00f3loga do IBGM, Gracia Bai\u00e3o, chama a aten\u00e7\u00e3o para a pr\u00e1tica indevida dos comerciantes de se atribuir nomes de gemas naturais e\/ou de se criar novas terminologias incorretamente para as gemas compostas. \u201cN\u00e3o existe \u2018esmeralda fusion\u2019, por exemplo. Neste caso, trata-se de uma gema composta que nada mais \u00e9 que um double (duas partes) coladas de vidro e quartzo\u201d.<\/p>\n<p><strong>Gemas revestidas<\/strong><\/p>\n<p>S\u00e3o aquelas que sobre sua superf\u00edcie se fez depositar por cristaliza\u00e7\u00e3o ou outros meios uma fina camada, colorida ou n\u00e3o, que pode ser ou n\u00e3o de igual composi\u00e7\u00e3o qu\u00edmica.<\/p>\n<p><strong>Imita\u00e7\u00f5es<\/strong><\/p>\n<p>S\u00e3o os produtos que imitam gemas naturais ou sint\u00e9ticas. Denominadas de produtos de fantasia, s\u00e3o fabricados pelo homem no intuito de reproduzir o efeito \u00f3ptico, a cor e\/ou a apar\u00eancia das gemas naturais ou sint\u00e9ticas, sem possuir suas propriedades f\u00edsicas, qu\u00edmicas ou sua estrutura cristalina.<\/p>\n<p><strong>Gemas reconstitu\u00eddas <\/strong><\/p>\n<p>S\u00e3o os materiais produzidos pelo homem mediante fus\u00e3o parcial ou aglomera\u00e7\u00e3o de fragmentos de gemas.<\/p>\n<p><strong>Gemas cultivadas<\/strong><\/p>\n<p>O termo cultivado refere-se aos produtos gemol\u00f3gicos produzidos pela natureza com interven\u00e7\u00e3o parcial do homem. \u00c9 o caso da p\u00e9rola cultivada, gema de origem org\u00e2nica que foi produzida pela natureza com a interfer\u00eancia humana.<\/p>\n<figure id=\"attachment_13799\" aria-describedby=\"caption-attachment-13799\" style=\"width: 586px\" class=\"wp-caption alignnone\"><img decoding=\"async\" class=\"size-full wp-image-13799\" src=\"https:\/\/feninjer.com.br\/wp-content\/uploads\/2019\/04\/Pe\u0301rola-cultivada.jpg\" alt=\"\" width=\"586\" height=\"416\" srcset=\"https:\/\/feninjer.com.br\/wp-content\/uploads\/2019\/04\/Pe\u0301rola-cultivada.jpg 586w, https:\/\/feninjer.com.br\/wp-content\/uploads\/2019\/04\/Pe\u0301rola-cultivada-360x256.jpg 360w, https:\/\/feninjer.com.br\/wp-content\/uploads\/2019\/04\/Pe\u0301rola-cultivada-570x405.jpg 570w\" sizes=\"(max-width: 586px) 100vw, 586px\" \/><figcaption id=\"caption-attachment-13799\" class=\"wp-caption-text\">P\u00e9rola cultivada<\/figcaption><\/figure>\n<p><strong>Gemas simulantes<\/strong><\/p>\n<p>S\u00e3o todos os produtos gemol\u00f3gicos que n\u00e3o s\u00e3o naturais. Portanto, as gemas sint\u00e9ticas, artificiais, revestidas, etc&#8230; s\u00e3o tamb\u00e9m simulantes.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Informar corretamente as caracter\u00edsticas dos materiais gemol\u00f3gicos \u00e9 obriga\u00e7\u00e3o de todas as joalherias Por Erica Mendes Em geral, todos os materiais gemol\u00f3gicos comumente comercializados possuem defini\u00e7\u00f5es e nomenclaturas indicadas em normas t\u00e9cnicas espec\u00edficas nacionais, a exemplo da ABNT, e internacionais, como ISO e CIBJO. E, \u00e9 obriga\u00e7\u00e3o das joalherias especificarem corretamente quais s\u00e3o os tipos [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":13798,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"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":"","ast-disable-related-posts":"","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":""}},"footnotes":"","_links_to":"","_links_to_target":""},"categories":[6,101],"tags":[3016,3018,330,3015,3017,3019],"class_list":["post-13796","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-gestao","category-metais-e-gemas","tag-abnt","tag-cibjo","tag-gemas","tag-gemologico","tag-iso","tag-nomenclatura"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Os diferentes tipos de gemas - FENINJER+ 2026 | A Maior Feira de Joias da Am\u00e9rica Latina<\/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:\/\/feninjer.com.br\/?p=13796\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Os diferentes tipos de gemas - FENINJER+ 2026 | A Maior Feira de Joias da Am\u00e9rica Latina\" \/>\n<meta property=\"og:description\" content=\"Informar corretamente as caracter\u00edsticas dos materiais gemol\u00f3gicos \u00e9 obriga\u00e7\u00e3o de todas as joalherias Por Erica Mendes Em geral, todos os materiais gemol\u00f3gicos comumente comercializados possuem defini\u00e7\u00f5es e nomenclaturas indicadas em normas t\u00e9cnicas espec\u00edficas nacionais, a exemplo da ABNT, e internacionais, como ISO e CIBJO. 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