Crystals are often symmetrically intergrown to form crystal twins.

For example, selenite crystals in excess of 10 meters are found in the Cave of the Crystals in Naica, Mexico.

Crystals of BPO < sub > 4 </ sub > can also precipitate from the flowing glass on cooling ; these crystals are not readily etched in the standard reactive plasmas used to pattern oxides, and will result in circuit defects in integrated circuit manufacturing.

Crystals of calcium sulfate or calcium fluoride are doped with dysprosium.

Crystals of LaB < sub > 6 </ sub > are used in high brightness, extended life, thermionic electron emission sources for electron microscopes and Hall effect thrusters.

Crystals of pure semiconductors ( such as silicon or germanium ) are very poor conductors at ambient temperatures because the energy that an electron must have in order to occupy a conduction energy level is considerably greater than the thermal energy available to an electron in such a crystal.

Crystals are regular arrays of atoms, and X-rays can be considered waves of electromagnetic radiation.

Crystals are often idealized as being perfectly periodic.

Crystals below 30 MHz are generally operated between series and parallel resonance, which means that the crystal appears as an inductive reactance in operation.

Crystals above 30 MHz ( up to > 200 MHz ) are generally operated at series resonance where the impedance appears at its minimum and equal to the series resistance.

Crystals are often naturally anisotropic, and in some media ( such as liquid crystals ) it is possible to induce anisotropy by applying an external electric field.

The Crystals are an American vocal group based in New York, considered one of the defining acts of the girl group era of the first half of the 1960s.

Crystals with anisotropic crystal structures are often birefringent, as well as plastics under mechanical stress.

Crystals that exhibit frozen droplets on their surfaces are referred to as rimed.

Crystals of calcium oxalate are in the leaf mesophyll.

Crystals are of frequent occurrence and they usually have very bright and smooth faces.

Crystals are also often found on urinalysis, which further points to calcium phosphate, and muscle biopsies show an steady state of phosphate in the cytosol as well as a dearth of ATP and phosphocreatine.

Each Color Kid is in charge of his / her respective color, and their Sprites mine Color Crystals from the Color Caves, which are turned into Star Sprinkles by a process much like using cookie cutters.

Crystals with the ability to influence evolution are laden throughout the player's quest, with the mystery of their origin becoming a secondary factor to the main story.

Crystals from some other localities, notably from Monteponi in Sardinia, are transparent and colourless, possessed of a brilliant adamantine lustre, and usually modified by numerous bright faces.

Crystals are monoclinic prismatic and typically fibrous in occurrence.

* Crystals are a source of power during most of the Crash Bandicoot video game series.

: Crystals of many rare species are only found in microscopic sizes.

In the United Kingdom, Folgers Instant Crystals are available.

Meador, a soldier with good knowledge of art, recognized the importance of the treasures ( among them being Gospel of Samuel and the Crystals of Constantinople ).

Black Crystals cut from the same mineral deposit could be " tuned " to sympathetically vibrate with each other instantly, even when separated by interstellar distances, allowing instantaneous telephone-like voice and data communication.

Crystals can also be formed by biological processes, see above.

* In 1962, the first major English language publication on the subject " Molecular Structure and Properties of Liquid Crystals ", by Dr. George W. Gray.

* History and Physical Properties of Liquid Crystals by Nobelprize. org

* Molecular Crystals and Liquid Crystals a journal by Taylor and Francis

* Liquid Crystals a journal by Taylor & Francis

* Molecular Crystals and Liquid Crystals a journal by Taylor & Francis

There was also a process that has been described as the " feminisation " of rock and roll, with the charts beginning to be dominated by love ballads, often aimed at a female audience, and the rise of girl groups like The Shirelles and The Crystals.

Crystals can be marred by twinning, which can occur when a unit cell can pack equally favorably in multiple orientations ; although recent advances in computational methods may allow solving the structure of some twinned crystals.

Already unhappy with having been replaced by Love and the Blossoms on two singles, The Crystals were even more upset when Spector began focusing much of his time on his other girl group The Ronettes.

Dee Dee carries on The Crystals legacy by performing with Patricia Pritchett-Lewis, a member since 2005, and Melissa Antoinette Grant ( a. k. a. MelSoulTree ), a member since 2002.

Love recorded a few solo hits, but, more memorably, was the lead vocalist on at least two hit records by The Crystals.

* Music for the old ( 1951 ) scientific silent short film ' Verformung von Metallkristallen ' ( The Deformation of Metal Crystals, catalogue number C 611 of the IWF, Institut für Film und Bild in Wissenschaft und Unterricht, Abteilung Hochschule und Forschung, Göttingen ) by Günter Wassermann ( Clausthal ).

Another prominent example of the Wall of Sound was " Da Doo Ron Ron " by The Crystals.

*" He's a Rebel " ( Philles, 1962 ) performed by The Crystals

In present time, the militant and tyrannical Valuan Empire, led by Empress Teodora, seeks the Moon Crystals in order to awaken the Gigas and take over the world.

After obtaining the Yellow Moon Crystal from the Valuan continent, Vyse and crew retrieve Fina's personal ship, which was lost upon her initial capture by the Valuans, and which she needs to bring the Moon Crystals to the Silver Civilization, which still exists in an immense shrine that orbits Arcadia.

Crystals of ferrocene after purification by vacuum sublimation

Two songs performed by jazz singer Kimiko Itoh (" Follow me ", " River of Crystals ") also featured.

* " Little Boy " a 1964 single by The Crystals

The same year, Goffin and King wrote " He Hit Me ( It Felt Like A Kiss )" ( performed by The Crystals ) after discovering that Boyd was being regularly beaten by her boyfriend.