sapphirine

American  

[saf-er-in, -uh-reen, -uh-rahyn] / ˈsæf ər ɪn, -əˌrin, -əˌraɪn /

adjective

1. consisting of sapphire; like sapphire, especially in color.

---

noun

1. a pale-blue or greenish, usually granular mineral, a silicate of magnesium and aluminum.

2. a blue variety of spinel.

sapphirine British  

/ ˈsæfəˌriːn, -rɪn /

noun

1. a rare blue or bluish-green mineral that consists of magnesium aluminium silicate in monoclinic crystalline form and occurs as small grains in some metamorphic rocks

2. a blue variety of spinel

---

adjective

1. relating to or resembling sapphire

Etymology

Origin of sapphirine

1375–1425; late Middle English saphyryn (< Old French ) ≪ Greek sappheírinos like lapis lazuli ( see sapphire, -ine ¹); sapphirine ( def. 2 ) < German Saphirin ≪ Greek, as above