Crystal

A crystal or crystalline solid is a solid material whose constituents are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions. In addition, macroscopic single crystals are usually identifiable by their geometrical shape, consisting of flat faces with specific, characteristic orientations. The scientific study of crystals and crystal formation is known as crystallography. The process of crystal formation via mechanisms of crystal growth is called crystallization or solidification. The word crystal derives from the Ancient Greek word κρύσταλλος, meaning both "ice" and "rock crystal", from κρύος, "icy cold, frost". Examples of large crystals include snowflakes, diamonds, and table salt. Most inorganic solids are not crystals but polycrystals, i.e. many microscopic crystals fused together into a single solid. Examples of polycrystals include most metals, rocks, ceramics, and ice.

Read more in the app

Researchers create single-crystal organometallic perovskite optical fibers

China discovers rare lunar crystal and nuclear power source on near side of the moon

Crystal-stuffed dinosaur eggs the size of cannonballs discovered in China

China Discovers Stunning Crystal on the Moon, Nuclear Fusion Fuel for Limitless Energy | The find makes China the third country to discover a new mineral on the Moon, and the country says it's analyzed the soil for rare helium-3.

Crystal Structure of Key SARS-CoV-2 Enzyme Unraveled – Paving the Way for New COVID Antivirals

Hundreds of Shimmering Crystal Fragments Discovered at Prehistoric Burial Site

Linked lanthanides shine light on field of crystal engineering

Building molecular bridges: New crystal engineering strategy to design ultrabright fluorescent solid dyes

Mysterious Hidden Quantum Phase in a 2D Crystal Captured by Scientists for the First Time

Strange, never-before-seen diamond crystal structure found inside 'Diablo canyon' meteorite

Starfish Embryos Swim in Surprisingly Organized Formation – Like a “Living Crystal”

Ancient 'Canyon Diablo' Meteorite Reveals Mysterious Diamond Crystal Structure

'IcePic' algorithm outperforms humans in predicting ice crystal formation

Strange, never-before-seen diamond crystal structure found inside 'Diablo canyon' meteorite

Sea Star Embryos Spin Into a Formation That's Just Like a Living Crystal

Starfish embryos form weird 'living crystal' we have never seen before

Human Pee Might Just Be the Key to Saving Seagrass. Treating wastewater creates struvite—a nutrient-rich crystal that bolsters struggling seagrass beds

Physicists Create Continuous Time Crystal for the First Time

Researchers determine 1st crystal structure of LAG3

This 830-million-year-old crystal might contain life. And we're about to open it : NPR