Results 151 to 160 of about 354 (163)

Gemological Characteristics of Pakistani Emeralds

, 1989
Edward J. Gübelin
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Study on the Gemological Characteristics of Amber from Myanmar and Chinese Fushun

Key Engineering Materials, 2013
This paper researches on the gemological characteristics of amber from Myanmar and Chinese Fushun by using of the basic instruments of gemology, SEM and FT-IR. The results show that the refractive index is approximately 1.54 both in Myanmar and Fushun amber, resin glossy as well as conchoidal fracture. While the hardness of Myanmar amber is much higher
Qiu Yu Xing, Miao Yang, Hui Xuan Yang, En Dong Zu   +3 more
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[The Gemological Characteristics of One Kind Turquoise Imitation].

Guang pu xue yu guang pu fen xi = Guang pu, 2018
It has been a long time that the imitations of turquoise appear in gem market. Pressed dyed carbonate in the early stage and dyed variscite, chalcedony as well as magnesite appeared in succession. These kinds of materials do not have the color and characteristics of natural turquoise.
Quan-li, Chen, Su-jie, Al, Qian-xiang, Wang, Xian-yu, Liu, Xin-rong, Ding, Zuo-wei, Yin   +5 more
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Gemological Characteristics of Corundum from Gia Nghia, Southern Vietnam

2009
Bulletin of Earth Sciences of Thailand (BEST), 2, 2-Jan, 63 ...
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Research on Gemological Characteristics of Colorless Sapphire

Advances in Geosciences, 2021
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Mineralogical and Gemological Characteristics of Musalı (Mersin –Turkey) Malahite - Azurite Formations

2023
Malahit Cu2(CO3) (OH)2 ve azurit (Cu3(CO3)2(OH)2) mineralleri Mersin iline bağlı Musalı köyü civarında Üst Kretase’de tektonik olarak bölgeye yerleşen Mersin ofiyoliti içerisinde gözlemlenmiştir. Altere olmuş gabro yan kayacının çatlak ve gözenek boşluklarında mavi ve yeşil renkli azurmalahitler, damarlar halinde bulunmaktadır.
GÜRBÜZ, Meltem, DEMİR, Betül
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Gemological Characteristics of Jadeite and Its Crust from Hpakant, Burma

Advances in Geosciences, 2023
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Gemological and Chemical Characterization of Varicolored Gem-Grade Spinel from Mogok, Myanmar

Crystals, 2023
Yi Zhao
exaly  

Gemological modification of local natural gemstones by ion beams

Surface and Coatings Technology, 2009
S Intarasiri, L D Yu, T Vilaithong
exaly  

Gemological Characteristics of Red Fluorite in Huanggangliang, Inner Mongolia

Advances in Geosciences
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