{"id":60418,"date":"2024-03-28T12:11:22","date_gmt":"2024-03-28T04:11:22","guid":{"rendered":"https:\/\/honwaygroup.com\/the-deceptive-gemstone-apatite\/"},"modified":"2025-05-15T09:27:52","modified_gmt":"2025-05-15T01:27:52","slug":"the-deceptive-gemstone-apatite","status":"publish","type":"post","link":"https:\/\/honwaygroup.com\/en\/the-deceptive-gemstone-apatite\/","title":{"rendered":"The &#8220;Deceptive&#8221; Gemstone\u2014Apatite"},"content":{"rendered":"\n<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><nav><ul><li class=\"\"><a href=\"#%E4%BB%8B%E7%B4%B9\">Introduction to Apatite<\/a><\/li><li class=\"\"><a href=\"#%E7%A3%B7%E7%81%B0%E7%9F%B3-apatite\">Structure of Apatite<\/a><\/li><li class=\"\"><a href=\"#%E7%A3%B7%E7%81%B0%E7%9F%B3%E5%95%86%E6%A5%AD%E5%83%B9%E5%80%BC\">Commercial Value of Apatite<\/a><\/li><\/ul><\/nav><\/div>\n\n<h3 class=\"wp-block-heading\" id=\"&#x4ECB;&#x7D39;\">Introduction<\/h3>\n\n<p>The word Apatite comes from Greek, meaning &#8220;deception,&#8221; because the mineral&#8217;s appearance can resemble that of emerald, sapphire, aquamarine, or amethyst, leading to confusion.<\/p>\n\n<p>Apatite refers to a group of calcium phosphate minerals that contain either chlorine (Cl) or fluorine (F). The most common species is fluorapatite, followed by chlorapatite and hydroxylapatite. Apatite often contains rare earth elements like cerium (Ce), uranium (U), and thorium (Th), which can impart a wide range of colors, including colorless, yellow, blue, purple, green, brown, and white. Some apatite specimens exhibit phosphorescence, meaning they continue to glow after exposure to UV light. Additionally, apatite has strong pleochroism, where the color changes when viewed from different angles. However, due to its lower hardness, apatite is not as widely sought after in the jewelry market.<\/p>\n\n<p>Apatite is found in igneous, metamorphic, and sedimentary rocks. In igneous rocks, apatite occurs mainly in pegmatites or hydrothermal veins, with gemstone-quality apatite typically sourced from pegmatitic granite. In sedimentary rocks, apatite forms through exogenic processes and contributes to the creation of phosphorite, a rock rich in phosphate minerals. In metamorphic rocks, apatite is generally found as an accessory mineral. Gem-quality apatite is most often extracted from alluvial deposits.<\/p>\n\n<p><\/p>\n\n<div class=\"wp-block-columns alignfull is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-container-core-column-is-layout-f7a85e60 wp-block-column-is-layout-flow\" style=\"padding-top:var(--wp--preset--spacing--80);padding-right:0;padding-bottom:var(--wp--preset--spacing--80);padding-left:0;font-size:0px;line-height:0\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/honwaygroup.com\/wp-content\/uploads\/2024\/03\/Fluorapatite-382311.webp\"><img fetchpriority=\"high\" decoding=\"async\" width=\"768\" height=\"1008\" src=\"https:\/\/honwaygroup.com\/wp-content\/uploads\/2024\/03\/Fluorapatite-382311.webp\" alt=\"Apatite\" class=\"wp-image-38697\" srcset=\"https:\/\/honwaygroup.com\/wp-content\/uploads\/2024\/03\/Fluorapatite-382311.webp 768w, https:\/\/honwaygroup.com\/wp-content\/uploads\/2024\/03\/Fluorapatite-382311-229x300.webp 229w, https:\/\/honwaygroup.com\/wp-content\/uploads\/2024\/03\/Fluorapatite-382311-300x394.webp 300w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><\/a><figcaption class=\"wp-element-caption\">Apatite<\/figcaption><\/figure>\n\n\n\n<p class=\"has-text-align-center\">(Figure 1) <sup data-fn=\"a1cfaeb8-9a85-4e7a-a83c-76ca4f6d17bd\" class=\"fn\"><a href=\"#a1cfaeb8-9a85-4e7a-a83c-76ca4f6d17bd\" id=\"a1cfaeb8-9a85-4e7a-a83c-76ca4f6d17bd-link\">1<\/a><\/sup><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<h3 class=\"wp-block-heading has-text-align-center\" id=\"&#x78F7;&#x7070;&#x77F3;-apatite\"><a href=\"https:\/\/www.google.com\/search?sca_esv=5f295d922f4ac677&amp;sca_upv=1&amp;q=Apatite&amp;udm=2&amp;fbs=AEQNm0AaBOazvTRM_Uafu9eNJJzC3QMRKTS5UIeA1ZwBo3sfI5STBA5pr7fqo2I_v__3YVGutX-70hIyezlJk563FvnaANll79LmO8NDYO9Lkpjx2The5iuQaOyJHx4O_Fyzp0DQNEjqPzGexXVkjQVznkozVrB0JCUsS5dbHbfEpeh2LLGIV7QHN6o1xOAtozZF63Xrk5ai&amp;sa=X&amp;sqi=2&amp;ved=2ahUKEwif8u6hneSGAxWJlK8BHQJCAe4QtKgLegQIDBAB&amp;biw=1536&amp;bih=695&amp;dpr=1.25\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Apatite<\/a><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li style=\"line-height:2\">Crystal system: hexagonal crystal system<\/li>\n\n\n\n<li style=\"line-height:2\">Hardness: 5 (knife can insert)<\/li>\n\n\n\n<li style=\"line-height:2\">Specific gravity: 3.15~3.20<\/li>\n\n\n\n<li style=\"line-height:2\">Gloss: glass, grease-like gloss<\/li>\n\n\n\n<li style=\"line-height:2\">Transparency: Transparent.<\/li>\n\n\n\n<li style=\"line-height:2\">Color: yellow, blue, purple, green, brown, white, colorless<\/li>\n\n\n\n<li style=\"line-height:2\">Refractive index: 1.642~1.646<\/li>\n\n\n\n<li style=\"line-height:2\">Birefringence: 0.004<\/li>\n\n\n\n<li style=\"line-height:2\">Fluorescence: variate in long wave, lavender fluorescence in short wave<\/li>\n\n\n\n<li style=\"line-height:2\">Cleavage: underdeveloped cleavage<\/li>\n\n\n\n<li style=\"line-height:2\">Characteristics: Pleochroism, common tubular pores<\/li>\n\n\n\n<li style=\"line-height:2\">Imitation: similar to tourmaline, topaz, chrysoberyl<\/li>\n<\/ul>\n<\/div>\n<\/div>\n\n<h3 class=\"wp-block-heading\" id=\"&#x78F7;&#x7070;&#x77F3;&#x5546;&#x696D;&#x50F9;&#x503C;\"><strong>Commercial Value of Apatite<\/strong><\/h3>\n\n<p>Apatite is easily confused with several common gemstones due to its appearance. Though it may be difficult to distinguish them with the naked eye, gemologists can easily identify apatite by examining its refractive index, birefringence, specific gravity, and clarity. However, it should be noted that apatite and tourmaline have similar refractive indices, requiring birefringence for differentiation. In the case of cabochon-cut stones, rather than faceted gems, distinguishing between the two becomes more challenging.<br\/><\/p>\n\n<p>Industrially<\/p>\n\n<p>Apatite is the source of approximately 90% of the world&#8217;s phosphorus, making it an essential industrial mineral for phosphorus extraction. Phosphorus is widely used in the medical, chemical, textile, and clothing industries, as well as in the production of inorganic products and the removal of toxic substances.<\/p>\n\n<p>Ornamentally<\/p>\n\n<p>Gem-quality cat&#8217;s eye apatite often contains parallel fibrous or tubular inclusions that easily create a chatoyancy effect in cabochon cuts. When selecting cat&#8217;s eye apatite, opt for visually flawless stones and vibrant colors like vivid blue-green (rainbow blue), which resembles Paraiba tourmaline, or intense green and royal blue. If these colors are combined with the cat&#8217;s eye effect, they are even more valuable and desirable.<\/p>\n\n<p>Brownish-yellow cat&#8217;s eye apatite closely resembles the coveted cat&#8217;s eye chrysoberyl, and it is common to find apatite varieties with a similar &#8220;honey color,&#8221; which is highly sought after in chrysoberyl.<\/p>\n\n<p class=\"has-ast-global-color-0-color has-text-color has-link-color wp-elements-9e93265e924580c204fec93c0a51e184\">Though apatite lacks pronounced cleavage, making it relatively impact-resistant, its low hardness means it still requires careful handling to prevent scratching. Additionally, apatite is sensitive to acids, so it should not be exposed to acidic liquids or soaked in hot springs, as this could lead to potential dissolution.<\/p>\n\n<p><\/p>\n\n<figure class=\"wp-block-pullquote has-medium-font-size\"><blockquote><p>Follow Honway to learn more about the characteristics of gemstones~<\/p><\/blockquote><\/figure>\n\n<p><\/p>\n\n<p><\/p>\n\n<p>Photo Credit:<\/p>\n<ol class=\"wp-block-footnotes has-small-font-size\"><li id=\"a1cfaeb8-9a85-4e7a-a83c-76ca4f6d17bd\"><a href=\"https:\/\/commons.wikimedia.org\/wiki\/File:Fluorapatite-382311.jpg\" target=\"_blank\" data-type=\"link\" data-id=\"https:\/\/commons.wikimedia.org\/wiki\/File:Fluorapatite-382311.jpg\" rel=\"noreferrer noopener nofollow\">Robert M. Lavinsky-S\u00e3o Geraldo do Baixio, Doce valley, Minas Gerais, Brazil<\/a> <a href=\"#a1cfaeb8-9a85-4e7a-a83c-76ca4f6d17bd-link\" aria-label=\"Jump to footnote reference 1\">\u21a9\ufe0e<\/a><\/li><\/ol>","protected":false},"excerpt":{"rendered":"<p>Apatite, whose name is derived from the Greek word meaning &#8220;deception,&#8221; is so named because its color and luster often resemble other gemstones. Apatite is a group of calcium phosphate minerals that contain chlorine or fluorine, with the main types being fluorapatite and chlorapatite. It comes in a variety of colors, including colorless, yellow, blue, purple, green, brown, and white, and may exhibit phosphorescence and strong pleochroism. Apatite is found in igneous, metamorphic, and sedimentary rocks, with gem-quality apatite mainly coming from pegmatites and alluvial deposits. Despite its relatively low hardness, making it less favored by jewelers, apatite is an important industrial mineral for extracting phosphorus, which is widely used in the medical, chemical, and other industries. When selecting apatite gemstones, flawless and brightly colored stones are the most desirable, especially those with a cat&#8217;s eye effect. While apatite is resistant to impact, it is susceptible to damage from acids, so proper care must be taken to avoid exposure to acidic substances.<\/p>\n","protected":false},"author":1,"featured_media":38699,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","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":"disabled","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-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":"","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-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":"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":""},"mobile":{"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":""}},"footnotes":"[{\"id\":\"a1cfaeb8-9a85-4e7a-a83c-76ca4f6d17bd\",\"content\":\"<a href=\\\"https:\\\/\\\/commons.wikimedia.org\\\/wiki\\\/File:Fluorapatite-382311.jpg\\\" target=\\\"_blank\\\" data-type=\\\"link\\\" data-id=\\\"https:\\\/\\\/commons.wikimedia.org\\\/wiki\\\/File:Fluorapatite-382311.jpg\\\" rel=\\\"noreferrer noopener\\\">Robert M. Lavinsky-S\\u00e3o Geraldo do Baixio, Doce valley, Minas Gerais, Brazil<\\\/a>\"}]"},"categories":[2251],"tags":[2837],"class_list":["post-60418","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-gemstones","tag-apatite"],"_links":{"self":[{"href":"https:\/\/honwaygroup.com\/en\/wp-json\/wp\/v2\/posts\/60418","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/honwaygroup.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/honwaygroup.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/honwaygroup.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/honwaygroup.com\/en\/wp-json\/wp\/v2\/comments?post=60418"}],"version-history":[{"count":0,"href":"https:\/\/honwaygroup.com\/en\/wp-json\/wp\/v2\/posts\/60418\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/honwaygroup.com\/en\/wp-json\/wp\/v2\/media\/38699"}],"wp:attachment":[{"href":"https:\/\/honwaygroup.com\/en\/wp-json\/wp\/v2\/media?parent=60418"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/honwaygroup.com\/en\/wp-json\/wp\/v2\/categories?post=60418"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/honwaygroup.com\/en\/wp-json\/wp\/v2\/tags?post=60418"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}