Results 81 to 90 of about 1,047 (213)
The Effect of Heat Treatment on Yellow-Green Beryl Color and Its Enhancement Mechanism
CrystalsBeryl is classified as a cyclosilicate mineral, and its color is primarily determined by the type and oxidation state of trace elements. In this study, natural yellow-green beryl was used as the research subject, and heat treatment experiments were ...
Binru Hao, Shuxin Zhao, Qingfeng Guo
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Gemological Characteristics and Trace Chemical Element Analysis of Emerald in Kafubu, Zambia
CrystalsThis study systematically analyzed the color characteristics, microscopic inclusions (including fluid and mineral inclusions), spectral properties, and chemical composition of emerald samples from Kafubu, Zambia using infrared spectroscopy, UV–visible ...
Yiwei Jiang +3 more
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CrystalsA new type of vesuvianite jade has recently been discovered in Hanzhong City, Shaanxi Province, China. However, a systematic investigation into its mineralogical characteristics and the origin of its color is currently lacking.
Ye Yuan +4 more
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The Characteristics of Luminescence from High-Temperature- and High-Pressure-Treated Diamonds
Applied SciencesHigh-temperature and high-pressure (HTHP)-treated diamonds have attracted attention all over the world due to their vivid colors. In order to explore a new method for the rapid and non-destructive identification of HTHP-treated diamonds, in this paper ...
Mu-Lin Huang +4 more
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CrystalsGem-quality garnets, with their high closure temperature (750–800 °C), high transparency, uniform composition, and purity, offer promising prospects for U-Pb dating.
Siyi Zhao, Bo Xu, Yi Zhao
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Ruby and sapphire from the tan Huong-Truc Lau area, Yen Bai province, Northernvietnam
, 2011 Primary and secondary deposits in the Tan Huong-Truc Lau area of northern Vietnam's Yen Bai Province have supplied rubies (especially star rubies) and some sapphires-mostly of cabochon quality-for more than a decade. The gems are typically translucent to
Van Nam N. +5 more
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International Journal of Economic and Environment Geology, 2019 Gemology and jewelry training are at the core of what the Gems and Jewelry Training and Manufacturing Centre in Baluchistan’s mineral rich province in the southwest of Pakistan does and stands for.
Mumtaz A. Baloch, Sakina Riaz, Saman Saman, Ghulam Yaseen, Bibi Kalsoom
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NINE GEMS AND MEDICAL GEMOLOGY: APPLICATION OF GEMS IN MEDICINE
Diamond and gems are important precious materials. The application of gems is an interesting issue in gemology. In this article, the authors specifically discuss on the application of the “nine gemsâ€, the sets of nine precious gems, in ...
SOOKAROMDEE, PATHUM
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Mineralogical Characteristics and Luminescent Properties of Natural Fluorite with Three Different Colors. [PDF]
Materials (Basel), 2022 Ge X, Guo Q, Wang Q, Li T, Liao L.
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Iranian Journal of Crystallography and Mineralogy, 2022 H. Sadeghi +3 more
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