onyx definition

  • noun:
    • A chalcedony occurring in rings various colors and it is utilized as a gemstone, particularly in cameos and intaglios.
    • A banded number of chalcedony, a cryptocrystalline as a type of quartz.
    • Chalcedony in synchronous levels of different tones of shade. Its employed for making cameos, the figure being cut in one level aided by the next as a ground.
    • identical to Mexican onyx.
    • A deep jet-black color.
    • a number of quartz, closely allied to agate, described as a structure in synchronous bands varying in shade or in degree of translucency: within the much better types the levels are dramatically defined additionally the colors white with black colored, brown, or red.
    • An infiltration of pus between he layers for the cornea, resembling a nail.
    • In conchology: The piddock, Pholas dactylus.
    • A razor-shell; a bivalve of family members Solenid√¶.
    • a chalcedony with alternating black-and-white rings; found in making cameos
  • adjective:
    • jet-black
    • Deep, jet-black.

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