gir·a·sole /ˈʤɪrəˌsɔl, ˌsol, ˌsɑl/ 火蛋白石
Gir·a·sole Gir·a·sol n. 1. Bot. See Heliotrope. [Obs.] 2. Min. A variety of opal which is usually milk white, bluish white, or sky blue; but in a bright light it reflects a reddish color. ◄ ►