SaNKaSilA
śaṅkhaśilā ( °śirā , once; = Pali saṅkhasilā, conjectured PTSD to mean mother-of-pearl , a pure guess), a sort of precious or semi-precious stone, mentioned in rigmarole lists of gems and precious metals, and almost always placed between vaiḍūrya and pravāḍa (°la): LV 276.21 ( Tib. makes it two items, duṅ = shell , and man śel = crystal, glass ); SP 102.2 (prose; Tib. as in LV ); 111.7 ( vs ; here Tib. only man śel ); Mv ii.472.1 ; Divy 115.3 ; 229.6 ; 291.9 ; Av i.184.5 ; 201.2 , etc. ; RP 40.8 ; Dbh 18.26 ; spelled °śirā, prob. by error, Gv 164.8 .