Quartz is a chemical compound consisting of one part silicon and two parts oxygen. It is silicon dioxide (SiO2). It is the most abundant mineral found at Earth's surface, and its unique properties make it one of the most useful natural substances.
Canon EOS M100 • EF-M28mm f/3.5 MACRO IS STM •...
Jack suggested to try colour lighting so this is my experiment with a red filter on a quartz crystal.
Canon EOS M100 • EF-M28mm f/3.5 MACRO IS STM • ƒ/3.5 28.0 mm 1/50 1600 Flash (off, did not fire)
Amethyst is a purple variety of quartz (SiO2) and owes its violet colour to irradiation, impurities of iron and in some cases other transition metals, and the presence of other trace elements, which result in complex crystal lattice substitutions. Popular for its purple colouring it is used for...