Research results of the past 6 decades on the incorporation of OH point defects in quartz are
summarised and evaluated in terms of their application to natural samples and processes …

Mineral-specific IR absorption coefficients were calculated for natural and synthetic olivine,
SiO 2 polymorphs, and GeO 2 with specific isolated OH point defects using quantitative data …

The infrared spectra of natural quartz, and synthetic quartz produced in conditions relevant
to natural environments, generally contain some association of OH-stretching absorption …

Natural quartz single crystals were experimentally deformed in two orientations:(1)⊥ to one
prism plane and (2) in O+ orientation at 900 and 1000° C, 1.0 and 1.5 GPa, and strain rates …

In colored gems, minor and trace chemical components commonly determine the difference
between a common mineral specimen and a gemstone. Also, these components are often …

A commonly marketed handheld Raman spectrometer showed excellent possibilities in
being used as a key instrument for unambiguous identification of gemstones mounted in the …

With the development of synthetic gem technology, a large number of synthetic rock crystals,
such as natural and synthetic amethyst and natural and synthetic smoky quartz, have …

In this work we performed a spectroscopic characterization of natural amethyst, citrine, and
prasiolite samples from different localities. These materials were examined by X-ray powder …

With the growing demand for personalized and high-quality jewelry, the jewelry industry is
continuously innovating to meet consumer needs. A new type of amethyst, called lavender …

Аннотация Методом инфракрасной Фурье спектроскопии был исследован кварц
различных типов с основных месторождений Уральской кварценосной провинции …