"Chalcedony" is a word in ENGLISH
A cryptocrystalline, translucent variety of quartz,
having usually a whitish color, and a luster nearly like wax.
Doing easily what others find is difficult is talent doing what is impossible for talent is genius.
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Indistinctly crystalline; -- applied to rocks and minerals, whose state of aggregation is so fine that no distinct particles are …
Read the complete definitionDistinctly crystalline; -- used of rocks. Opposed to cryptocrystalline.
Read the complete definitionA compact granular cryptocrystalline mineral of a dull grayish or greenish white color. It is a hydrous alkaline silicate, and …
Read the complete definitionRelating to, or resembling, porphyry, that is, characterized by the presence of distinct crystals, as of feldspar, quartz, or augite, …
Read the complete definitionA variety of cryptocrystalline of a leek-green color.
Read the complete definitionA form of silica, or silicon dioxide (SiO2), occurring in hexagonal crystals, which are commonly colorless and transparent, but sometimes …
Read the complete definition