璃
リ, あき

glassy, lapis lazuli

JLPT1 G7 S15 F5000

玉 jewel + 离# for the sound alone to transliterate the final syllable of the Sanskrit vaidurya (lapis lazuli: 吠瑠璃). The compound 玻璃 refers to crystal and/or glass.

[Full Kanji Etymology List]