{"id":60465,"date":"2024-02-09T10:00:00","date_gmt":"2024-02-09T02:00:00","guid":{"rendered":"https:\/\/honwaygroup.com\/blue-green-jade-tourmaline\/"},"modified":"2025-05-15T09:29:05","modified_gmt":"2025-05-15T01:29:05","slug":"blue-green-jade-tourmaline","status":"publish","type":"post","link":"https:\/\/honwaygroup.com\/en\/blue-green-jade-tourmaline\/","title":{"rendered":"Blue-Green Jade \u2013 Tourmaline"},"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 Tourmaline<\/a><\/li><li class=\"\"><a href=\"#%E9%9B%BB%E6%B0%A3%E7%9F%B3-tourmaline\">Structure of Tourmaline<\/a><\/li><li class=\"\"><a href=\"#%E9%9B%BB%E6%B0%A3%E7%9F%B3%E5%95%86%E6%A5%AD%E5%83%B9%E5%80%BC\">Commercial Value of Tourmaline<\/a><\/li><\/ul><\/nav><\/div>\n\n<h3 class=\"wp-block-heading\" id=\"&#x4ECB;&#x7D39;\"><strong>Introduction<\/strong><\/h3>\n\n<p>Tourmaline is a fascinating gemstone with a color diversity that surpasses many others. Some crystals can even exhibit a cat\u2019s eye effect (cat&#8217;s eye tourmaline). Tourmaline has been used historically in royal adornments, such as in the Qing Dynasty\u2019s court jewelry. The name &#8220;tourmaline&#8221; is believed to have originated from the Sinhalese word &#8220;TURMALI,&#8221; which was initially used for zircon stones, and the name stuck after a package of tourmaline was mistakenly sold under that label.<\/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 alignwide size-full\"><a href=\"https:\/\/honwaygroup.com\/wp-content\/uploads\/2024\/02\/20240209_&#x96FB;&#x6C23;&#x77F3;.webp\"><img decoding=\"async\" src=\"https:\/\/honwaygroup.com\/wp-content\/uploads\/2024\/02\/20240209_&#x96FB;&#x6C23;&#x77F3;.webp\" alt=\"\" class=\"wp-image-38514\"\/><\/a><\/figure>\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=\"&#x96FB;&#x6C23;&#x77F3;-tourmaline\"><strong><a href=\"https:\/\/www.google.com\/search?sca_esv=6a8e8a6372ddea43&amp;sca_upv=1&amp;q=Tourmaline&amp;udm=2&amp;fbs=AEQNm0AaBOazvTRM_Uafu9eNJJzC3QMRKTS5UIeA1ZwBo3sfI5STBA5pr7fqo2I_v__3YVFFmrKaXi6M13KGcus8wAvXnFbWvfrt9wJcHUCNvMggXckMsca3ns-M_CjO5jAVv-qq9_hgGkmPyXwadnlkXuRq9jYsBizhPP3uO8OGNOly2gIjp0eqRPzWhr-27yKdmhudw0ek&amp;sa=X&amp;sqi=2&amp;ved=2ahUKEwiMn_bSxeSGAxX-oa8BHTbSChsQtKgLegQIChAB&amp;biw=1536&amp;bih=695&amp;dpr=1.25\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Tourmaline<\/a><\/strong><\/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: 7~7.5<\/li>\n\n\n\n<li style=\"line-height:2\">Specific gravity: 3.0~3.2<\/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: green, brown, red, blue, black<\/li>\n\n\n\n<li style=\"line-height:2\">Refractive index: 1.62~1.64<\/li>\n\n\n\n<li style=\"line-height:2\">Birefringence: 0.02<\/li>\n\n\n\n<li style=\"line-height:2\">Fluorescence: Multiple variations<\/li>\n\n\n\n<li style=\"line-height:2\">Cleavage: No cleavage<\/li>\n\n\n\n<li style=\"line-height:2\">Characteristics: Strong pleochroism, ridge ghosting, piezoelectricity<\/li>\n<\/ul>\n<\/div>\n<\/div>\n\n<h3 class=\"wp-block-heading\" id=\"&#x96FB;&#x6C23;&#x77F3;&#x5546;&#x696D;&#x50F9;&#x503C;\"><strong>Commercial Value of Tourmaline<\/strong><\/h3>\n\n<p>The name &#8220;tourmaline&#8221; is fitting due to the crystal&#8217;s piezoelectricity, where pressure applied to the C-axis (long axis) ends of the tourmaline crystal generates an electrical charge. When heated, tourmaline also produces an electric charge, a characteristic known as pyroelectricity. Tourmaline is currently the gemstone known to exhibit the most diverse range of colors, and it is the gemstone that can display the most color variations on a single crystal.<\/p>\n\n<p>When purchasing tourmaline, the <a href=\"https:\/\/honwaygroup.com\/4cf\/\" target=\"_blank\" rel=\"noreferrer noopener\">4C<\/a> principles apply. In terms of color, blue or blue-green tourmalines are the rarest and most valuable, followed by red. Greenish-yellow tones are less desirable, but chrome tourmaline with a vivid green color can be more valuable than red tourmaline. Both red and green tourmalines are popular in the market, and the most coveted variety is the blue-green Paraiba tourmaline. Cat&#8217;s eye tourmaline is a rare phenomenon.<\/p>\n\n<p>In terms of clarity, eye-clean stones are ideal. If the price is too high, aim for inclusions that are not visible under magnification. The cut often relates to clarity, as faceted tourmalines generally have better clarity than cabochon-cut ones, resulting in superior brilliance and fire, which significantly impacts their price. Tourmaline&#8217;s carat weight also influences its price, with significant increases in value for stones over 5 and 10 carats, depending on color, clarity, and cut quality.<\/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","protected":false},"excerpt":{"rendered":"<p>Tourmaline is renowned for its wide range of colors, with its name derived from the Sinhalese word &#8220;TURMALI.&#8221; Tourmaline crystals possess both piezoelectric and pyroelectric properties, generating electrical charges when subjected to pressure or heat. Among the various colors, blue or blue-green tourmalines are the most valuable, followed by red, while chrome tourmaline with a bright green color also holds high value. The rarest and most valuable is Paraiba tourmaline. When selecting tourmaline, the 4C principles (color, clarity, cut, and carat) play a key role in determining its price. Cat&#8217;s eye tourmaline is a rare phenomenon. High clarity and well-cut stones are more valuable.<\/p>\n","protected":false},"author":1,"featured_media":38516,"comment_status":"closed","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":"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":""},"categories":[2251],"tags":[2844],"class_list":["post-60465","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-gemstones","tag-tourmaline"],"_links":{"self":[{"href":"https:\/\/honwaygroup.com\/en\/wp-json\/wp\/v2\/posts\/60465","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=60465"}],"version-history":[{"count":0,"href":"https:\/\/honwaygroup.com\/en\/wp-json\/wp\/v2\/posts\/60465\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/honwaygroup.com\/en\/wp-json\/wp\/v2\/media\/38516"}],"wp:attachment":[{"href":"https:\/\/honwaygroup.com\/en\/wp-json\/wp\/v2\/media?parent=60465"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/honwaygroup.com\/en\/wp-json\/wp\/v2\/categories?post=60465"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/honwaygroup.com\/en\/wp-json\/wp\/v2\/tags?post=60465"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}