Search gender: all male female Riaju Girl Name Meaning, Kanji Variations. 1 names found. gender: all male female Name: riaju Katakana: リアジュ 0 Kanji: 璃亜樹 Meaning: 璃A character used for the gemstones "crystal" and "lapis lazuli". 亜Next. Near. Similar. Companions. Branching point. Abbreviation for Asia (Asia). 樹Trees. General term for plants. To plant a tree. To set up. To stand firmly. You can save your favorite names with NAZUKE PON > About Japanese Names > Search For Japanese Names > Riaju Girl Name Meaning, Kanji Variations.