Gem-quality pink fluorite from Planggenstock, Switzerland: chemical and physical properties and a comparison with pink fluorites from other localities

Noble gases —elements of the last column of the periodic table—are chemically defined by their f

Museums are unique repositories of international treasures. They are also places of active research,

Sixteen rough diamonds were acquired in 2023 by co-author TTS from a gem dealer linked to Mong Hsu,