Results 21 to 30 of about 163 (100)
Gemological and Spectroscopic Characteristics of “Jedi” Spinel from Man Sin, Myanmar
Minerals (Basel, Switzerland), 2022 The price of spinel has sharply risen in recent years, and its market acceptance is extending. Among the many sources of spinel, Man Sin in Myanmar is the most famous for its bright neon pinkish red to reddish pink color, named “Jedi” spinel commercially.
Longpei Zhao, Geng Li, Liqun Weng
exaly +2 more sources
Gemological and Chemical Characterization of Gem-Grade Peridot from Yiqisong, Jilin Province
CrystalsPeridot has a long history and is deeply loved by people for its unique olive-green color. The Yiqisong peridot deposit in Jilin Province is a newly discovered peridot deposit that still deserves systematic research.
Jina Li, Yi Zhao, Bo Xu
doaj +3 more sources
CrystalsYuanjiang County is one of the most important gem-producing areas in China. The authors of this study discovered and collected gem-quality andradite Garnsts in the epidote amphibolite from the periphery of the ruby deposit in Shaku Village, Yuanjiang ...
Liu-Run-Xuan Chen +6 more
doaj +3 more sources
Crystals, 2022 Because of the increasing price of jadeite, many fake species have appeared on the market. We recognized three pieces of fake black jadeite that had been placed among real black jadeite.
Beiqi Zheng, Ke Li, Yuyang Zhang
doaj +3 more sources
Yankuang ceshi, 2023 BACKGROUND The emerald is loved by people because of its gorgeous color and is respected as one of the world's four major gems. Due to the high value of emeralds, a variety of synthesis and optimization methods have emerged.
ZHU Hongwei +8 more
doaj +2 more sources
Известия высших учебных заведений: Геология и разведка, 2018 Fossils of marine reptiles are a new jewelry and ornamental material and collected in the Ulyanovsk region from the Upper Jurassic deposits. They consist of (wt. %): calcite — 52, apatite — 24 and pyrite — 23, and also gypsum presents.
D. A. Petrochenkov
doaj +2 more sources
Известия высших учебных заведений: Геология и разведка, 2019 For the first time, data on the mineral composition and gemological characteristics of the jewelry-ornamental ammonites of the Republic of Adygea have been presented.
D. A. Petrochenkov
doaj +2 more sources
The Gemological and Mineral Characteristics of Variscite from Ma'anshan of Anhui Province
Yankuang ceshi, 2014 Currently green and translucent variscites have been discovered near the turquoise ore body in the Ma'anshan mine. Some variscites can achieve gem grade. The testing methods of Electron Probe Microanalysis (EPMA), X-ray Powder Diffraction (XRD) analysis,
ZHOU Yan +4 more
doaj +3 more sources
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
doaj +2 more sources
Crystals, 2023 The orange fluorescence of scapolite has been confirmed to be caused by (S2)−, but the frequent blue fluorescence in gem-quality scapolite has not been well explained.
Yinghua Rao +3 more
doaj +1 more source