Beryl. iii » 18 commonly mountain and feladon green: from ! hefe it paffes through apple green, afparagus green, ltlto oil green, and laftly into honey yellow, which approaches to wine yellow. From the feladon green Pafies into fmalt, fky, and, in rare inftances, into * 2u re blue. f A lmoft all its colours are pale, feldom deep, and ar cely ever dark. Sometimes it has two colours at ? ace > which alternate in layers, and fometimes it is Ul defcent. ft is cryftallized in long equiangular fix-fided j^'feis, which are either perfect or truncated on the ate ral and terminal edcres and angles. The trunca- tlfm j s of the terminal edges fometimes become fo th^ 6 3S t0 ^° rm ft x ‘Pl ant ’d acuminations, of which diff a ^*^ CeS Ure truncate ^* Th c cr yftals, owing to the er ent breadths of their lateral planes, fometimes ^ Proach to trihedral, fometimes to oblique te- ^ e dral prifms. When they have cylindrical, con- . * lateral planes, they are lometimes acicular, fome- " m « reed-like. die r' C CT ^ a * s are f° m etimes heaped on each other, ^ 0 i"tn' lla ^ C1 " ° nCS a ft n °ft always uppermoft, thus are ^ * ^ la P e ftl te a tower; and, in other cafes, they ^Perforated in the direction of their axes. ffier , anc l implanted, and interfect one ano- ^ tit are feldom fingle. Rnri ^ on Sfttidinally Itreaked, but the truncating * inal planes fmooth. a 1} ^rge, and very large. Externally
