noun
The blue semiprecious stone or mineral. Often associated with a vivid deep blue.
瑠璃をはめ込んだ指輪を買った。
I bought a ring set with lapis lazuli.
noun
lapis lazuli blue; deep blue
Color-name use, treated as an abbreviation of 瑠璃色. In ordinary explanation, 瑠璃色 is clearer.
See also: 瑠璃色
布見本には色名として「瑠璃」と書かれていた。
The fabric sample listed the color name as “ruri,” lapis-lazuli blue.
noun
Specialized mineral-name use, as an abbreviation related to 吠瑠璃. Not the everyday meaning of 瑠璃.
See also: 吠瑠璃
鉱物名で「瑠璃」とあれば、吠瑠璃（ベリル）の略を指す場合がある。
In mineral names, “ruri” can refer to an abbreviation of 吠瑠璃, beryl.
noun
small blue passerine bird; blue-and-white flycatcher; Siberian blue robin; red-flanked bluetail
Bird-name abbreviation used with or for names such as 小瑠璃, 大瑠璃, and 瑠璃鶲. It is a specialized ornithological or birdwatching use, not a general word for birds.
野鳥の記録で「瑠璃」とあれば、小瑠璃や大瑠璃などを指すことがある。
In birdwatching records, “ruri” may refer to birds such as the Siberian blue robin or the blue-and-white flycatcher.
noun
Rare use meaning glass. Modern Japanese normally uses ガラス or 硝子 for this meaning.
古い文献では、瑠璃がガラスを意味することがある。
In old texts, 瑠璃 can mean glass.
Rare attested kanji variant; 瑠璃 is the normal spelling.
The explicit color term for lapis-lazuli blue; clearer than using 瑠璃 alone for the color.
A direct katakana term for lapis lazuli; 瑠璃 is the traditional Japanese/kanji term and also has color and specialized abbreviation uses.
The normal modern word for glass; 瑠璃 meaning glass is rare and mostly historical or literary.
No origin is specified. 瑠璃 is the conventional kanji spelling for lapis lazuli and by extension its deep blue color; 琉璃 is a rare alternate spelling.