Results 61 to 70 of about 267 (156)

The Characteristics of Luminescence from High-Temperature- and High-Pressure-Treated Diamonds

Applied Sciences
High-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, Xue-Mei He, Ming-Yue Du, Peng-Fei Jiang, Xue-Feng Wang   +4 more
doaj   +1 more source

Age Determination of Gem-Quality Green Vanadium Grossular (Var. Tsavorite) from the Neoproterozoic Metamorphic Mozambique Belt, Kenya and Tanzania

Crystals
Gem-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
doaj   +1 more source

Gems and Jewels: Passing Down Specialized Knowledge and Skills in Pakistan’s Mineral-Rich Province of Balochistan

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
doaj  

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.
europepmc   +1 more source

Gemological Characteristic Difference between Colorless CVD Synthetic Diamonds and Natural Diamonds. [PDF]

Materials (Basel), 2021
Lu Q, Gong H, Guo Q, Huang X, Cai J.
europepmc   +1 more source

Gemological Abstracts [PDF]

Gems & Gemology, 1986
openaire   +2 more sources

Controllable crystal form transformation and luminescence properties of up-conversion luminescent material K₃Sc_0.5Lu_0.5F₆: Er³⁺, Yb³⁺ with cryolite structure. [PDF]

RSC Adv, 2021
Yan Z, Guo Q, Liao L, Shuai P, Huang F, Mei L.   +5 more
europepmc   +1 more source

Combining Micro-Raman Spectroscopy and Scanning Electron Microscopy Mapping: A Stony Meteorite Study. [PDF]

Materials (Basel), 2021
Musa M, Rossini R, Di Martino D, Riccardi MP, Clemenza M, Gorini G.   +5 more
europepmc   +1 more source

Origin of Color and Spectral Characteristics of Nanhong Agate from Northeast Yunnan, China

Crystals
Nanhong agate has attracted public attention as the most distinctive gemstone in China. Owing to the limited data on Nanhong agates from a new production area in northeastern Yunnan, this paper presents the first data from gemological studies on these ...
Qiuyun Song, Liurunxuan Chen, Ruohan Zuo, Xianchao Chen, Sugang Sui, Wenzhou Pu, Xiaoqi Yang, Shitao Zhang, Wenlian Liu   +8 more
doaj   +1 more source

Changing Hydrocarbon-Producing Potential of the Cambrian Niutitang Shale: Insights from Pyrite Morphology and Geochemical Characteristics. [PDF]

ACS Omega, 2023
Wang X, Zhang J, Shi M, Pang Y, Zhao Y, Yang X.   +5 more
europepmc   +1 more source