{"id":60412,"date":"2024-05-05T17:17:37","date_gmt":"2024-05-05T09:17:37","guid":{"rendered":"https:\/\/honwaygroup.com\/the-color-changing-gemstone-diaspore\/"},"modified":"2025-05-15T09:26:59","modified_gmt":"2025-05-15T01:26:59","slug":"the-color-changing-gemstone-diaspore","status":"publish","type":"post","link":"https:\/\/honwaygroup.com\/en\/the-color-changing-gemstone-diaspore\/","title":{"rendered":"The Color-Changing Gemstone\u2014Diaspore"},"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 Diaspore<\/a><\/li><li class=\"\"><a href=\"#%E7%A1%AC%E6%B0%B4%E9%8B%81%E7%9F%B3-diaspore\">Diaspore<\/a><\/li><li class=\"\"><a href=\"#%E7%A1%AC%E6%B0%B4%E9%8B%81%E7%9F%B3%E5%95%86%E6%A5%AD%E5%83%B9%E5%80%BC\">Commercial Value of Diaspore<\/a><\/li><\/ul><\/nav><\/div>\n\n<h3 class=\"wp-block-heading\" id=\"&#x4ECB;&#x7D39;\"><strong>Introduction<\/strong><\/h3>\n\n<p>Diaspore, also known as hard water aluminum stone, derives its name from the Greek word meaning &#8220;to scatter,&#8221; because it tends to explode and scatter when heated.<\/p>\n\n<p>This hydrated aluminum oxide mineral belongs to the orthorhombic crystal system and is isomorphous with goethite. Its crystals are typically flat, and its aggregates are sheet-like or scaly clusters with well-developed cleavage and a pearly luster on the fracture surfaces. Diaspore is usually colorless, gray, or pale yellow, with rare occurrences of purple.<\/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-vertically-aligned-center 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 aligncenter size-full is-resized\"><a href=\"https:\/\/honwaygroup.com\/wp-content\/uploads\/2024\/05\/Diaspore-md58a.webp\"><img fetchpriority=\"high\" decoding=\"async\" width=\"485\" height=\"800\" src=\"https:\/\/honwaygroup.com\/wp-content\/uploads\/2024\/05\/Diaspore-md58a.webp\" alt=\"Diaspore\" class=\"wp-image-38809\" style=\"width:330px;height:auto\" srcset=\"https:\/\/honwaygroup.com\/wp-content\/uploads\/2024\/05\/Diaspore-md58a.webp 485w, https:\/\/honwaygroup.com\/wp-content\/uploads\/2024\/05\/Diaspore-md58a-182x300.webp 182w, https:\/\/honwaygroup.com\/wp-content\/uploads\/2024\/05\/Diaspore-md58a-300x495.webp 300w\" sizes=\"(max-width: 485px) 100vw, 485px\" \/><\/a><figcaption class=\"wp-element-caption\">Diaspore<\/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=\"&#x786C;&#x6C34;&#x92C1;&#x77F3;-diaspore\"><a href=\"https:\/\/www.google.com\/search?q=Diaspore&amp;sca_esv=7898575184a519fd&amp;sca_upv=1&amp;udm=2&amp;biw=1536&amp;bih=695&amp;ei=kwRwZrChF7rl1e8P_JirsAo&amp;ved=0ahUKEwjwtseOrOKGAxW6cvUHHXzMCqYQ4dUDCBA&amp;uact=5&amp;oq=Diaspore&amp;gs_lp=Egxnd3Mtd2l6LXNlcnAiCERpYXNwb3JlMgUQABiABDIEEAAYHjIEEAAYHjIEEAAYHjIEEAAYHjIEEAAYHjIEEAAYHjIEEAAYHjIEEAAYHjIEEAAYHkjiB1DaA1jaA3ADeACQAQCYATOgATOqAQExuAEDyAEA-AEC-AEBmAIEoAJCwgIGEAAYBxgemAMAiAYBkgcBNKAHvQI&amp;sclient=gws-wiz-serp\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Diaspore<\/a><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li style=\"line-height:2\">Crystal system: orthorhombic crystal system<\/li>\n\n\n\n<li style=\"line-height:2\">Hardness: 5~6<\/li>\n\n\n\n<li style=\"line-height:2\">Specific gravity: 3.2~3.3<\/li>\n\n\n\n<li style=\"line-height:2\">Luster: Vitreous luster<\/li>\n\n\n\n<li style=\"line-height:2\">Transparency: Transparent to opaque<\/li>\n\n\n\n<li style=\"line-height:2\">Color: White, brown, colorless, light yellow, gray, green, lavender, pink<\/li>\n\n\n\n<li style=\"line-height:2\">Index of refraction: 1.66~1.72<\/li>\n\n\n\n<li style=\"line-height:2\">Birefringence: 0.026~0.029<\/li>\n\n\n\n<li style=\"line-height:2\">Fluorescence: Multiple variations<\/li>\n\n\n\n<li style=\"line-height:2\">Cleavage: Complete columnar cleavage<\/li>\n\n\n\n<li style=\"line-height:2\">Characteristics: Well-developed cleavage and easy to wear<\/li>\n\n\n\n<li style=\"line-height:2\">Imitation: glass, synthetic spinel<\/li>\n<\/ul>\n<\/div>\n<\/div>\n\n<h3 class=\"wp-block-heading\" id=\"&#x786C;&#x6C34;&#x92C1;&#x77F3;&#x5546;&#x696D;&#x50F9;&#x503C;\"><strong>Commercial Value of Diaspore<\/strong><\/h3>\n\n<p>Ornamental<\/p>\n\n<p>The most prized variety is the color-changing diaspore, found in Turkey, commercially referred to as Zultanite. This gem can exhibit a color-changing effect comparable to alexandrite, shifting between green, pink, yellow, and purple. Large, high-quality color-changing diaspore specimens are extremely rare and highly valuable.<\/p>\n\n<p>Color Change: Diaspore exhibits a fascinating color change when exposed to different light sources, such as natural light, incandescent light, or fluorescent light. The gem can shift from green to pink, and even yellow or purple. This captivating phenomenon is caused by the interaction of light with the gem&#8217;s crystal lattice structure. <\/p>\n\n<p>Industrially<\/p>\n\n<p>Diaspore is commonly found in <a href=\"https:\/\/baike.baidu.hk\/item\/%E9%8B%81%E5%9C%9F%E7%A4%A6\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">bauxite<\/a>, <a href=\"https:\/\/baike.baidu.hk\/item\/%E7%B4%85%E5%9C%9F\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">laterite<\/a>, and some rocks, and is used as a refractory material or as a source of aluminum extraction.<\/p>\n\n<p><\/p>\n\n<p class=\"has-ast-global-color-0-color has-text-color has-link-color wp-elements-119e20b11765e638495596c35ffba869\">Diaspore is a hard gemstone, resistant to scratches, but its cleavage makes it susceptible to breaking, so it should be protected from impacts and exposure to harsh chemicals like household cleaners or perfumes, which can damage the stone.<\/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>Photo Credit:<\/p>\n<ol class=\"wp-elements-7945d15369fc2883aec9f1e77d12d742 wp-block-footnotes has-text-color has-ast-global-color-0-color has-small-font-size\"><li id=\"a1cfaeb8-9a85-4e7a-a83c-76ca4f6d17bd\"><a href=\"https:\/\/commons.wikimedia.org\/wiki\/File:Diaspore-md58a.jpg\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Robert M. Lavinsky,https:\/\/commons.wikimedia.org\/wiki\/File:Diaspore-md58a.jp<\/a>g <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>Diaspore, with its English name derived from the Greek word meaning &#8220;to scatter,&#8221; refers to its tendency to burst apart when heated. This hydrous aluminum oxide mineral belongs to the orthorhombic crystal system and is an isodimorphous mineral with goethite. Its crystals are flattened, and aggregates occur as lamellar or scaly clusters. It exhibits distinct cleavage, and the fracture surface often has a pearly luster. Diaspore is typically colorless, gray, or pale yellow, and a rare purple variety can also be found. Highly prized for its ornamental value is the color-change diaspore, which originates from Turkey and is commercially known as &#8220;Zultanite.&#8221; Its color change effect is comparable to that of Alexandrite, displaying colors such as green, pink, yellow, and purple. Large carat specimens with a strong color change effect are extremely rare and difficult to value.<br \/>Industrially, diaspore is widely present in bauxite, laterite, and certain rocks. It can be used as a refractory material and for the refining of aluminum. Diaspore has high hardness, making it resistant to scratching, but due to its distinct cleavage, it should be protected from impacts and contact with irritating chemicals such as household cleaners and perfumes, which can damage the gemstone.<\/p>\n","protected":false},"author":1,"featured_media":38811,"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:Diaspore-md58a.jpg\\\" target=\\\"_blank\\\" rel=\\\"noreferrer noopener\\\">Robert M. Lavinsky,https:\\\/\\\/commons.wikimedia.org\\\/wiki\\\/File:Diaspore-md58a.jp<\\\/a>g\"}]"},"categories":[2251],"tags":[1769,2835],"class_list":["post-60412","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-gemstones","tag-diamond-classroom-en","tag-diaspore"],"_links":{"self":[{"href":"https:\/\/honwaygroup.com\/en\/wp-json\/wp\/v2\/posts\/60412","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=60412"}],"version-history":[{"count":0,"href":"https:\/\/honwaygroup.com\/en\/wp-json\/wp\/v2\/posts\/60412\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/honwaygroup.com\/en\/wp-json\/wp\/v2\/media\/38811"}],"wp:attachment":[{"href":"https:\/\/honwaygroup.com\/en\/wp-json\/wp\/v2\/media?parent=60412"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/honwaygroup.com\/en\/wp-json\/wp\/v2\/categories?post=60412"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/honwaygroup.com\/en\/wp-json\/wp\/v2\/tags?post=60412"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}