agate
A type of banded chalcedony, often used in jewelry and ornamental objects.
This ring uses agate.
Agate is a stone with beautiful colored bands.
onyx; banded agate
moss agate
Usually written in kana; the kanji form 瑪瑙 is rare and mainly used in technical or literary contexts.
Kanji form; rarely used in everyday writing.
Katakana spelling, often used in scientific or commercial contexts.
The word めのう is derived from the Chinese term 瑪瑙 (mǎnǎo), which itself may have origins in a foreign language. The exact derivation is uncertain.