 | | Journal (article/letter/editorial) | | com/locate/oregeorev Ore formation of the Dayakou emerald deposit (Southwest China) constrained by chemical and boron...Gemology, China University of Geosciences Beijing, 29 Xueyuan Road, Beijing 100083, China MNR Key Laboratory...Institute of Mineral Resources, CAGS, Beijing 100037, China A R T I C L E I N F O A B S T R A C T Keywords:...elements Emerald deposit China Dayakou The Cretaceous Dayakou emerald deposit (southwest China) hosted...tourmaline from the Dayakou deposit, aiming to constrain the source of ore-forming fluid and emerald genesis. Two |  | | Journal (article/letter/editorial) | | Element Geochemistry of Dayakou Vanadium-Dominant Emerald from Malipo (Yunnan, China): Genetic Model and...Xiaoyan Yu * and Hongshu Guo School of Gemology, China University of Geosciences Beijing, 29 Xueyuan Road...Road, Haidian District, Beijing 100083, China; 2009170025@cugb.edu.cn (Y.Z.); 2009180045@cugb.edu.cn (H...Abstract: Emerald from the deposit at Dayakou is classified as a vanadium-dominant emerald together with...V-dominant emeralds and traced the genesis of the Dayakou deposit, there has not been any systematic comparison |  | | Journal (article/letter/editorial) | | School of Gemology, China University of Geosciences Beijing, Beijing 100083, China * Correspondence: yuxy@cugb...one of the world’s major emerald-producing countries. In this study, emerald samples from Kamakanga, Zambia...creativecommons.org/licenses/by/ 4.0/). 1. Introduction Emerald is a variety of beryl whose ideal formula is Be3...[4], but it is difficult to distinguish Zambian emerald from others with the naked eye, just by color....earned $21.5 million, including a 6100 carat rough emerald. Consequently, Zambian emeralds have great promising |  | | Journal (issue) | | White and Black Diamonds Vanadium-Rich Emerald from Malipo, China Inclusions in Corundum from Bo Welu,...diamonds. 338 Unique Vanadium-Rich Emerald from Malipo, China Yang Hu and Ren Lu Spectroscopic and...alexandrite • Conichalcite in quartz chalcedony • Emerald in rock crystal quartz • Iolite-sunstone intergrowth...News International Blue gahnite from Nigeria • Emerald update with Arthur Groom • New find of deep blue...Stability of forgotten opal specimens • Trapiche emerald from Pakistan • Uvarovite in prehnite from the |  | | Journal (issue) | | row, from left: Euclase, 2.3 cm, from the Gachalá mine, Guavió-Guatéque mining district, Boyacá Department...Fluorite with quartz, 11 cm, from Fujian Province, China. Keith & Diane Brownlee collection; Joe Budd photo...5 cm, from the Amo tin deposit, Ximeng County, Yunnan, China. Wally Mann collection; Joe Budd photo....Budd photo. Tanzanite, 7.6 cm, from the Merelani mine near Arusha, Tanzania. Barry & Beth Kitt collection;...2.2 cm, from the Pulsifer quarry, Androscoggin County, Maine. Kyle Kevorkian collection; Jordan Root |  | | Journal (article/letter/editorial) | | Gemology, China University of Geosciences Beijing, 29 Xueyuan Road, Beijing 100083, China; 2009200043@cugb...Ltd., Xiamen 361026, China Correspondence: yuxy@cugb.edu.cn Abstract: Emerald is among the most valuable...gemological and geological research. In this study, emerald samples from India were examined by UV-Vis-NIR...included phlogopite, quartz, talc, aragonite, and albite. The representative UV-Vis-NIR spectra show a distinct...Cr, Sc, Cs, Rb, and Ga gradually increases in emerald with color band. Keywords: Indian emeralds; fluid |  | | Journal (article/letter/editorial) | | Southern Tibet, China Yiyun Wang *, Guangming Li, Wei Liang and Zhi Zhang Chengdu Center, China Geological...Geological Survey, Chengdu 610081, China; li-guangming@163.com (G.L.); lwcugb@126.com (W.L.); tancer_1314@126.com...Sn-W-Be Rare Polymetallic Deposit in Southern Tibet, China. Minerals 2022, 12, 497. https://doi.org/10.3390/...polymetallic deposit located in southern Tibet, China, where beryl is the main beryllium-bearing mineral...polymetallic deposit, located in southern Tibet, China, was first discovered in the Himalaya region in |  | | Journal (issue) | | Volume 38 / No. 1 / 2022 Colombian Emerald Oddities Pink-Orange Euclase from Brazil Inclusions in...Gemmological Education ARTICLES 26 Colombian Emerald Oddities: Review and Formation Mechanisms By Isabella...Colombian Emerald | Iolite from the Czech Republic | Sailboat-like Inclusion in Ruby from China | Raman...Unheated Pink Sapphires | Spessartine from Tongbei, China | Cu-bearing Tourmaline with a Distinct Fe Concentration...Blister Pearl | A Convincing Glass Imitation of Emerald 6 80 By Féodor Blumentritt and Emmanuel Fritsch |
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