or rose quartz (titanium, iron, and manganese). Inclusions and trapped gasses can turn quartz translucent (milky quartz) and natural irradiation can even act on stray aluminum in the crystal ...

With sharp lines and two unique case colours, the Richard Mille RM 16-02 embraces a fresh design while staying true to its ...

Quartz, felspar and mica are found in pegmatite rocks, which are an important source of many critical minerals such as beryl, lithium, niobium, tantalum, molybdenum, tin, titanium and tungsten ...