{"id":4948,"date":"2021-10-21T14:28:26","date_gmt":"2021-10-21T06:28:26","guid":{"rendered":"https:\/\/jiehonggem.com\/?post_type=product&#038;p=4948"},"modified":"2021-10-21T14:28:27","modified_gmt":"2021-10-21T06:28:27","slug":"mba-0434","status":"publish","type":"product","link":"https:\/\/jiehonggem.com\/zh\/shop\/mba-0434\/","title":{"rendered":"MBA.0434&#038;"},"content":{"rendered":"<h1>\u85cd\u746a\u7459<\/h1>\n<ul>\n<li><span style=\"font-weight: 400;\">chalcedony (kal-SED-uh-<\/span><span style=\"font-weight: 400;\">nee) is microcrystalline or cryptocrystalline quartz; hexagonal (trigonal) crystal system; chemical composition SiO2<\/span><\/li>\n<li><span style=\"font-weight: 400;\">semitransparent to opaque\u00a0<\/span><\/li>\n<li><span style=\"font-weight: 400;\">blue, milky chalcedony with dyed treatment<\/span><\/li>\n<\/ul>\n<h2>Identification<\/h2>\n<ul>\n<li>Optic Character: <span style=\"font-weight: 400;\">AGG<\/span><\/li>\n<li>Refractive Index: <span style=\"font-weight: 400;\">1.535-1.539; 1.53 or 1.54 spot reading<\/span><\/li>\n<li>Birefringence: <span style=\"font-weight: 400;\">usually not detectable, but may show .004<\/span><\/li>\n<li>Pleochroism:<span style=\"font-weight: 400;\"> none\u00a0<\/span><\/li>\n<li>Ultraviolet Fluorescence: <span style=\"font-weight: 400;\">generally inert (LW and SW); some may fluoresce a <\/span><span style=\"font-weight: 400;\">yellowish green (LW and SW)<\/span><\/li>\n<li>Absorption Spectra: <span style=\"font-weight: 400;\">dyed green &#8211; vague lines around 645 and 670 nm<\/span><\/li>\n<li>Specific Gravity: <span style=\"font-weight: 400;\">2.60 (+.10,-.05)<\/span><\/li>\n<li>Polish Luster:<span style=\"font-weight: 400;\"> greasy to vitreous<\/span><\/li>\n<li>Fracture:<span style=\"font-weight: 400;\"> conchoidal; sometimes granular<\/span><\/li>\n<li>Luster: <span style=\"font-weight: 400;\">dull to waxy<\/span><\/li>\n<li>Cleavage:<span style=\"font-weight: 400;\"> none<\/span><\/li>\n<li>Identifying Characteristics: <span style=\"font-weight: 400;\">dyed green and dyed blue appear red or pinkish through <\/span><span style=\"font-weight: 400;\">Chelsea filter<\/span><\/li>\n<li>Crystal Habit: <span style=\"font-weight: 400;\">aggregate, often in botryoidal forms<\/span><\/li>\n<li>Hardness: <span style=\"font-weight: 400;\">6 \u00bd\u00a0 to 7<\/span><\/li>\n<li>Toughness: <span style=\"font-weight: 400;\">good<\/span><\/li>\n<\/ul>\n<p><span style=\"font-size: 23.040000915527344px;\">Enhancements<\/span><\/p>\n<ul>\n<li>Method: <span style=\"font-weight: 400;\">dyeing <\/span><\/li>\n<\/ul>\n<p>Effect: <span style=\"font-weight: 400;\">chalcedony is dyed to practically all colors for various uses; the bands in agate and <\/span><span style=\"font-weight: 400;\">Onyx accept dye differently so that a green dye, for example, may impart color to some <\/span><span style=\"font-weight: 400;\">layers and leave others white. <\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span>Prevalence: <span style=\"font-weight: 400;\">common<\/span><br \/>\nDetection: <span style=\"font-weight: 400;\">appearance (color often looks unnatural), spectrum, Chelsea filter reaction, SG <\/span><span style=\"font-weight: 400;\">(dyed green often lower (2.60 or less) than chrysoprase) <\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><\/p>\n<p>&nbsp;<\/p>\n<p>Sources: Brazil, Uruguay<b><br \/>\n<\/b><\/p>\n<p>&nbsp;<\/p>\n<h4><b>Stone information is reference from<\/b><\/h4>\n<p><span style=\"font-weight: 400;\">Gem Reference Guide, Published by GIA. ISBN 0-87311-019-6<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Gemstones of the World, Published by Sterling Publishing Co., Inc NY, ISBN 1-4027-4016-6<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Encyclopedia of GEMSTONE, Published by ISHINSHA CO., LTD. ISBN 978-986-251-831-1<\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>Blue Agate 4mm x 16\u2033 (MBA.0434&amp;)<br \/>\nHole 0.8 mm, approximately 89 beads.<\/p>","protected":false},"featured_media":4951,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_cat":[200],"product_tag":[],"jetpack_sharing_enabled":true,"jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/jiehonggem.com\/zh\/wp-json\/wp\/v2\/product\/4948"}],"collection":[{"href":"https:\/\/jiehonggem.com\/zh\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/jiehonggem.com\/zh\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/jiehonggem.com\/zh\/wp-json\/wp\/v2\/comments?post=4948"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/jiehonggem.com\/zh\/wp-json\/wp\/v2\/media\/4951"}],"wp:attachment":[{"href":"https:\/\/jiehonggem.com\/zh\/wp-json\/wp\/v2\/media?parent=4948"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/jiehonggem.com\/zh\/wp-json\/wp\/v2\/product_cat?post=4948"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/jiehonggem.com\/zh\/wp-json\/wp\/v2\/product_tag?post=4948"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}