"Chalcedony" is a word in ENGLISH

chalcedony ENGLISH

Definition:

A cryptocrystalline, translucent variety of quartz,
having usually a whitish color, and a luster nearly like wax.

Few words of positivity

I was afraid I wrote neither well enough nor ill enough for success.

E.W. Hornung, Raffles: The Amateur Cracksman

WORD SUGGESTIONS

Laugh your heart out.

Teacher:"To which family does the elephant belong ?"Pupil:"I don't know, nobody I know owns one !"

Indistinctly crystalline; -- applied to rocks and minerals, whose state of aggregation is so fine that no distinct particles are …

Distinctly crystalline; -- used of rocks. Opposed to cryptocrystalline.

pinite ENGLISH

A compact granular cryptocrystalline mineral of a dull grayish or greenish white color. It is a hydrous alkaline silicate, and …

Relating to, or resembling, porphyry, that is, characterized by the presence of distinct crystals, as of feldspar, quartz, or augite, …

prase ENGLISH

A variety of cryptocrystalline of a leek-green color.

quartz ENGLISH

A form of silica, or silicon dioxide (SiO2), occurring in hexagonal crystals, which are commonly colorless and transparent, but sometimes …