Jewelry Morocco septaria. Gemological characteristics and mineral composition
Известия высших учебных заведений: Геология и разведка, 2023 Background. Septaria, comprising calcareous-clay nodules with calcite veins, are widely used as jewelry and ornamental materials. Septaria from Morocco represented on the world and Russian markets of jewelry and ornamental stones remain gemologically and
D. A. Petrochenkov
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Gemological and Mineralogical Characteristics of Emerald from Ethiopia
Crystals, 2023 Ethiopia has been gaining attention in recent years as an emerging source of high-quality emerald. Ethiopian emerald samples with different colors ranging from dark green to light green were selected to study the gemological properties, chemical ...
Zixuan Huang +3 more
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Study on Gemological Characteristics and Inclusions of Yellow Topaz
Crystals, 2022 Topaz is a kind of mineral with variable composition and a common gemstone variety. Because of its wide distribution and rich colors, it has attracted the attention of scholars around the world.
Zixiong Song, Qingfeng Guo, Libing Liao
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Gemological Characteristic Difference between Colorless CVD Synthetic Diamonds and Natural Diamonds. [PDF]
Materials (Basel), 2021 CVD synthetic diamond plays an important role in the jewelry market due to its excellent performance and low cost. In this paper, colorless CVD synthetic diamonds produced by a Chinese company were investigated in detail with their gemological, spectroscopic, and luminescent properties compared with natural colorless diamonds.
Lu Q, Gong H, Guo Q, Huang X, Cai J.
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Mineralogical And Gemological Characteristics Of Metaophiolite Hosted Corundum (Malatya-Türkiye)
Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2021 The corundum is found in the rocks of the Berit metaophiolite in Eastern Anatolia, near Doğanşehir a province of Malatya. Metaophiolitic rocks consist mainly of garnet metagabbro, granulite, amphibolite, mylonitic amphibolite, garnet amphibolite ...
Fikret İşler +5 more
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Gemological Characteristics of Blue-Violet Cordierite
CrystalsCordierite is a violet-blue gem mineral primarily composed of magnesium aluminum silicate. This study employed three samples of Mg-cordierite and conducted tests on their gemological characteristics, spectroscopic features, and chemical composition using
Wenjie Yan +3 more
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Gemological and Spectral Characteristics of Gem-Quality Blue Gahnite from Nigeria
Journal of Spectroscopy, 2023 Gem-quality blue octahedral crystalline gahnite was produced in Nigeria. This paper investigated gemological and spectroscopic characteristics by basic gemological experiments, electron probes, infrared reflectance spectroscopy, laser Raman spectroscopy,
Yifang Chen +4 more
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Gemological characteristics and inclusions of green rutilated quartz from Huanggangliang, Inner Mongolia. [PDF]
RSC AdvNormally, various minerals exist in quartz as inclusions.
Zhao S +5 more
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Study on Gemological Characteristics of Blue Sapphires from Baw-Mar Mine, Mogok, Myanmar [PDF]
Crystals, 2021 This paper employs an X-ray powder crystal diffractometer (XRD), an X-ray fluorescence spectrometer (XRF), an ultraviolet-visible-near infrared spectrometer (UV-Vis-NIR), a Fourier infrared spectrometer (FTIR), and a laser Raman spectrometer to ...
Siming Chen +4 more
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Gemmological, Spectroscopic, and Origin Description Studies of Tourmaline from Yunnan, China [PDF]
MoleculesThe Nujiang region of Yunnan is by far the richest tourmaline-producing mining area in China. Since the discovery of the tourmaline-bearing deposit in Yunnan Province in 1980, there have been few comprehensive gemmological studies of this deposit ...
Qishen Zhou +4 more
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