Quartz veins in the rocky shore at Crackington Haven, North Cornwall, England, United Kingdom, Europe

Quartz veins in the rock bed at Crackington Haven, Cornwall, England, United Kingdom, Europe

Quartz veins in rocks at Sandymouth Bay, Cornwall, England, United Kingdom, Europe

The so-called 'Wall of China' a natural formation of quartz, Halls Creek, Kimberley, Western Australia, Australia

Looking towards the Assynt hills taken from Eididh nan Clach Geala, Highlands, Scotland, UK, with large quartz boulders in the foreground.

Tension cracks in rock filled with quartz (rr)

Quartz pattern in stone, Coast of the Atlantic Ocean, Portugal, Europe

Rock formation The Pinnacles, Nambung National Park, Western Australia, Australia

Rock formation The Pinnacles, Nambung National Park, Western Australia, Australia

Rock formation The Pinnacles, Nambung National Park, Western Australia, Australia