{"id":6712,"date":"2021-11-18T13:53:05","date_gmt":"2021-11-18T05:53:05","guid":{"rendered":"https:\/\/jiehonggem.com\/?post_type=product&#038;p=6712"},"modified":"2022-06-09T16:42:01","modified_gmt":"2022-06-09T08:42:01","slug":"mam-042b","status":"publish","type":"product","link":"https:\/\/jiehonggem.com\/shop\/mam-042b\/","title":{"rendered":"MAM.042B"},"content":{"rendered":"<h1><b>Amethyst<\/b><\/h1>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The v<\/span><span style=\"font-weight: 400;\">ariety of the mineral quartz; hexagonal (trigonal) crystal system; chemical <\/span><span style=\"font-weight: 400;\">composition SiO2\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">transparent; material used for beads and <\/span><span style=\"font-weight: 400;\">carvings may be translucent\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">bluish purple to purple to reddish purple; often shows a slight shift in hue under different lighting <\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><\/li>\n<\/ul>\n<h2><span style=\"font-weight: 400;\">Trade Names: <\/span><\/h2>\n<ul>\n<li><span style=\"font-weight: 400;\">Uralian or Siberian amethyst &#8211; deep <\/span><span style=\"font-weight: 400;\">reddish purple to purple-red <\/span><\/li>\n<li><span style=\"font-weight: 400;\">ametrine &#8211; bi-colored variety with <\/span><span style=\"font-weight: 400;\">amethyst and citrine colors<\/span><\/li>\n<\/ul>\n<h2><span style=\"font-weight: 400;\">Identification:<\/span><\/h2>\n<ul>\n<li><span style=\"font-weight: 400;\">Optic Character: DR, uniaxial positive\u00a0<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Refractive Index: 1.544-1.553 (very constant)\u00a0<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Birefringence: .009\u00a0<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Dispersion: .013\u00a0<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Pleochroism: weak to moderate purple and reddish purple\u00a0<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Ultraviolet Fluorescence: usually inert; may show weak blue (SW)\u00a0<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Cause of Color: color centers involving iron impurities and irradiation\u00a0<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Specific Gravity: 2.66 (+.03, -.02)<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Polish Luster: vitreous\u00a0<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Fracture: conchoidal<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Luster: vitreous<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Cleavage: none\u00a0<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Identifying Characteristics: color zoning, twinning, liquid, 2-phase, and 3-phase<\/span><\/li>\n<li><span style=\"font-weight: 400;\">inclusions, negative crystals, may show bull&#8217;s-eye or Airy&#8217;s spiral optic figure\u00a0<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Hardness: 7\u00a0<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Toughness: good<\/span><\/li>\n<\/ul>\n<h2><span style=\"font-weight: 400;\">Enhancements:<\/span><\/h2>\n<ul>\n<li><span style=\"font-weight: 400;\">Method: heat treatment <\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Effect: lightens the color of very dark amethyst; removes smoky component of color; produces citrine and green quartz <\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">Prevalence: occasional <\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">Detection: undetectable <\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">Stability: excellent <\/span><\/p>\n<h2><span style=\"font-weight: 400;\">Birthstone Designation(s): <\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Amethyst &#8211; February, Pisces (approximately Feb. 19 &#8211; Mar. 20), 8:00 am, Wednesday, 6th wedding anniversary\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Major Sources: Brazil, Uruguay, Namibia.<\/span><\/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>\n","protected":false},"excerpt":{"rendered":"<p>Amethyst 12mm x 16&#8243; (MAM.042B)<br \/>\nHole 0.8mm ,approximately 25 pairs.<\/p>\n","protected":false},"featured_media":6715,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"product_cat":[182],"product_tag":[],"jetpack_sharing_enabled":true,"jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/jiehonggem.com\/wp-json\/wp\/v2\/product\/6712"}],"collection":[{"href":"https:\/\/jiehonggem.com\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/jiehonggem.com\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/jiehonggem.com\/wp-json\/wp\/v2\/comments?post=6712"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/jiehonggem.com\/wp-json\/wp\/v2\/media\/6715"}],"wp:attachment":[{"href":"https:\/\/jiehonggem.com\/wp-json\/wp\/v2\/media?parent=6712"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/jiehonggem.com\/wp-json\/wp\/v2\/product_cat?post=6712"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/jiehonggem.com\/wp-json\/wp\/v2\/product_tag?post=6712"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}