Definition of rock crystal in English:

rock crystal

noun

mass noun
  • Transparent quartz, typically in the form of colourless hexagonal crystals.

    ‘a piece of rock crystal’
    as modifier ‘a rock crystal ball’
    count noun ‘Scottish beachcombers can expect rock crystals and cairngorms’
    • ‘Crystal gazing seeks visions allegedly seen in a ball of rock crystal, preferably quartz.’
    • ‘However in the pagan period, rock crystal was used to make crystals balls about 2 inches in diameter.’
    • ‘Perhaps it was his ambition to have a career commensurate with his talent that led him to settle in Paris, where he distinguished himself over several decades by his cutting of rock crystal, his speciality.’
    • ‘A volcanic eruption, or magma rising and cooling close to the Earth's surface, will cause the formation of a wide variety of igneous rock crystals.’
    • ‘In 1986 the world's leading science journal announced that the most ancient rock crystals on earth, according to isotope dating methods, are 4.3 billion years old.’
    • ‘A clear and colorless glass, called cristallo in Italian for its resemblance to rock crystal, was a widely sought Venetian product.’
    • ‘A number of mysterious indications from ancient cultures link the use of rock crystals with communications through the air.’
    • ‘The few glass beads, and one of rock crystal, are also imports.’
    • ‘If left to their own devices, pieces made of rock crystal will last forever, but they are of course unusually vulnerable to breakage and destruction.’
    • ‘The rock crystal pieces were complemented by a positive kaleidoscope of coloured hardstones.’
    • ‘The same people crafted stone tools of a satisfying symmetry that seemed to transcend mere utility, and to collect as objets trouvés, rock crystals, fossils and pebbles of pleasing shapes.’
    • ‘Also of interest were objects of precious or semiprecious materials such as rock crystal - or natural wonders - such as nautilus shells.’
    • ‘Prague once again became a great centre of hardstone - not to mention rock crystal - production in the later sixteenth century by virtue of the patronage of Emperor Rudolph II.’
    • ‘Painting on the inside of snuff bottles made of rock crystal or glass was a great Qing innovation.’
    • ‘By a happy chance, the earliest postclassical European rock crystal vessels are at the same time the purest in terms of design.’
    • ‘Qianlong, who reigned from 1736 to 1795 and died in 1799, was one of the greatest patrons and collectors of Chinese rock crystal carvings ever.’
    • ‘Small flakes of rock crystal as well as axes, bone projectile points, and burials are known.’

Pronunciation

rock crystal