Rock Crystal

Rock Crystal BaseBase **·** 6★6★ Voice Artist: Momochi Ruka Type: Magical Role: Spellcaster Base rarity: 4★~6★Rock Crystal BaseBase **·** 6★6★ Voice Artist: Momochi Ruka Type: Magical Role: Spellcaster Base rarity: 4★~6★
Rock Crystal is spellcaster jewel princess that deals magic damage, debuted in Jewel Tales ~ Inca Rose event.

# Profile

## Lore

Rock Crystal is one of the teachers of Coffret à Bijoux - Institute of Optics, incredibly popular among her students, which was further explained later after Rhodonite's introduction, in which the latter doesn't seem to stop talking about her.

Her first appearance is in Jewel Tales ~ Inca Rose, teaching the new jewel princess Inca Rose basics on how to properly manipulate and control her inner starlight into useful energy.

Rock Crystal was a former Elixseed member, and thus she knows the art of healing and is Seraphinite's savior.

## Personality

Rock Crystal speaks in a supposedly Japanese-stereotype of American-accented Japanese. To indicate this, almost all the suffixes in her sentences sound unnatural in Japanese (and written in katakana, which are loan words used to speak foreign languages).

She has attracted a lot of popularity from her school students, in particular the fan club "Lovers" led by Rhodonite.

# Mineralogy

**Nicknamed the "timing crystal" because of its precision of its oscillation when electricity activates it, Quartz is the birthstone of April in some cultures. Rock Crystal represents harmony, and wish-making.**

Quartz is one of the most common minerals in the Earth's continental crust. Pure quartz is made of crystallized silica (silicon dioxide, SiO2). Pure quartz, traditionally called rock crystal or clear quartz, is colorless and transparent or translucent, and has often been used for hardstone carvings, such as the Lothair Crystal.

Quartz has been known to humanity through most of history and has been called by a bewildering array of names. Common colored varieties include citrine, rose quartz, amethyst, smoky quartz, and milky quartz. Semi-rare quartz species include aventurine, tiger's eye, red jasper, white onyx and black onyx.

The term "quartz" comes from the German Quarz, which is of Slavic origin (Czech miners called it křem). Some sources, however, trace the word to the Saxon term Querkluftertz, meaning “cross-vein ore.”

Roman naturalist Pliny the Elder (23–79 C.E.) believed quartz to be permanently frozen ice. In support of this idea, he said that quartz is found near glaciers in the Alps and that large quartz crystals were fashioned into spheres to cool the hands. He was aware of the ability of quartz to split light into a spectrum.

Today, one of the most ubiquitous uses of quartz, based on its piezoelectric property, is to make "crystal oscillators" (often simply called "quartzes"). A quartz crystal oscillator is an electronic circuit in which the mechanical resonance of a vibrating quartz crystal creates an electrical signal with a precise frequency. This frequency is commonly used to keep track of time (as in quartz wristwatches), to provide a stable clock signal for digital integrated circuits, and to stabilize frequencies for radio transmitters.
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