prehnite Definition

transparent gem, grossularite, amazonite, chrysoprase, sodalite, water sapphire, rhodonite, cacholong, rhodochrosite, saussurite, blue john, rose quartz, chalcedony, opaque gem, kunzite, sagenitic, zoisite, citrine, omphacite, gemstone, sagenite, quartz, quartziferous, calcedon, smoky quartz, knebelite, corundom, garnet, spinel, chloropal, chrysocolla, hauerite, libethenite, malachite, amethyst, spinel ruby, martite, labradorite, tyrolite, lanarkite, babingtonite, peridot, chondrodite, olivenite, kyanite, andalusite, gismondine, tourmaline, cyclosilicate, meionite, euclase, miascite, lazulite, pargasite, quartzy, luxullianite, smaltite, ditroite, enhydros, novaculite, rubicelle, warwickite, phillipsite, baddeleyite, quartzoid, gahnite, proustite, septarium, horn silver, dyscrasite, aventurine, okenite, lepidocrocite, annabergite, argyrodite, cerargyrite, stromeyerite, liroconite, serpentinize, skutterudite, essonite, aurichalcite, petunse, boulangerite, harmotome, kerolite, stephanite, volborthite, apatite, garnierite, amphibole group, chalcanthite, cabochon, pectolite, epidote, stinkstone, carnelian, pyrite, eucairite, agatiferous,