Quartz (variety smoky) group of dark brown prismatic crystals on orthoclase matrix from Beinn A' Bhuird, 10.75km north west of Braemar, Aberdeenshire

Quartz, variety smoky quartz - a dark brown prismatic crystal - from Sterling Hill, Peterhead, Aberdeenshire

Quartz variety smoky, fine large deep-brown crystal with rhombohedral terminations, associated with mica, from Brazil.

Quartz variety smoky (morion), large aggregate dark-brown crystal group on matrix, from Brazil

Quartz, variety smoky quartz, crystal showing two clearly different coexisting growth phases, deep smoky phase one and milky white phase two, from Massabe Quarry, Sils, La Selva, Girona, Catalonia, Spain.

Quartz, variety smoky quartz - a translucent brown crystal fragment showing good termination - locality unknown.