In gavhari mashhur ast, ki az shikami nave az sadaf barmeovarand. Marvorid dar hajm gunogun ast: maydai on az tukhmi kuknor rezatar va kaloni on to miqdori tukhmi gunchishk va banudrat ba andozai tukhmi kabutar niz yoft meshavad va to alhol ba vazni to 14 grammash mavjud va malum meboshad. Guftaand: behtarini on safedi obdori sofi yalaqqosii kululai galtoni bahrayni, hurmuzi va ummonii on ast. Bad az on surohi (shisharangi), ki bo sifathoi nomburda ast; va shaklhoi digari obdori safedi yalaqqosii on az on pasttar ast; zard va siyohi beob va bisyor rezai on bekora meboshad. Dar bahri jazirai Seylon va jazirahoi digari monandi Birazil az arzi jadid (nav kashfshuda)-i arzi janubi, ki na saro ba nazdiki ba dast ovardaand va gayri on jo niz ba ham merasad.
Dar Murshidobod va Havzai Ob va digar bahrho niz marvorid ba ham merasad, lekin bisyor rezai zardrangi nosara ast. Ahyonan donahoi buzurg ba andozai nakhud va nihoyat to 1,4 gramm dar vazn va moil ba surkhi barmeoyad. On dar haqiqat mobayni hayvon, rastani va sang ast. Sangiyata on bar hama golib monandi podzahri hayvoni va sadafi on hayvonot ast, ki dar zeri bahr zindagi ba sar mebarad, monandi rastani resha dorad va siyohrang, ki dar bayni sangho va sangrezahoi qari bahr band menamoyand va batadrij kalon meshavad.
Hangomi gurusnagi dahan, yane du sadafi khudro mekushoyad; mohiyoni reza, kirmho va chizhoi shilmaki zeri bahrro, ki on chi dar daruni on meoyand, gizoi khud mesozad. Harchand in makhluq buzurgtar gardad, reshai on qavitar va sadafash kalontar, safed va yalaqqosi megardad. Marvorid dar miyoni on qarib ba dili on paydo meshavad. Va meguyand, ki vay to haddi muayyan kalon megardad va agar gavvoson on marvoridro az daruni on barnaovarand, bo mururi vaqt boz gudokhta shuda, barham mekhurad. Dar joyhoe, ki zeri daryo az khoki sof iborat boshad, marvoridi khub ba kamol merasad va harchand sanglokhtar boshad, behtar meshavad.
On chi rivoyat ast, ki guyo vaqti boridani boroni nayson sadaf ruyi ob omada, dahani khudro mekushoyad va qatrai boron dar on bichakad, az on marvorid hosil meshavad — tamoman beasos ast. Mizoji marvorid dar okhiri darajai duvum sard va khushk ast. Hislathoi shifobakhshi on: khususiyathoi umumii on: farahbakhshanda, raqiqkunanda (suyuq), quvvatbakhshi uzvhoi botin, afzunkunandai quvvathoi nafsoni, ki manbaash mayna ast; quvvati hayvoni, ki manbaash dil ast va quvvati tabii, ki manbaash jigar ast, inchunin, quvvatbakhsh ba ruhhoi badan, ki manbai inho niz har se uzvhoi nombarshuda meboshand. Marvorid dar khislati farahbakhshi qavitar az tillo ast va ba tamomi uzv va qismhoi badan nufuzkunanda meboshad.
Agar soidai inro bikhurand, khun qay kardan va har guna khunravihoro man mekunad; vasvos, devonagihoi gunogun, badbuii dahan, damkutahi, hamai navhoi diltapak (dilbozi), khavf, huzn va tars az bisyor gashtani moddai savdo dar mayna, bemorihoi dil, sustii medai garmmizojon, inchunin, sustii jigar va gurdaro daf mekunad; girehhoro dar uzvhoi badan mekushoyad, sangi gurda va khichakro mayda karda merezonad; zardparvin va suzishi peshob (suzok)-ro daf menamoyad; isholi khunin va safroviro band mekunad, inchunin, khuni bavosir va hayzro ham man mesozad.
Obero, ki dar on marvorid hal karda shuda boshad, dar bini birezand, dardi sarro, ki az rekhtani mijgonhoi chashm ba amal omada boshad, dar martabai avvali nushidan shifo mebakhshad. Marvoridro mahin os karda, chun surma ba chashm kashand, dardi chashm, shilpuqi, torikii chashm, guli chashm, pardan dudmonandi ba chashm aftoda, tiragi va zakhmi onro shifo mebakhshad.
Mahluli marvoridro ba chashm bimoland, guli chashmro daf mekunad, ba chashm quvvat mebakhshad, sihati chashmro nigoh medorad. Agar inro ba dandonho bimoland, milki dandonro qavi megardonad va dandonro az chirk pok mosozad. Mahluli marvoridro zanho az tag bardorand, homila shudanro man mekunad. Marvoridi gayrimahlulro bimoland, doghon kunjidak, dogi safedi pust, dogi makhav va gayraro pok mekunad. Vale mahluli onro bimoland, pesro daf mesozad — in ba qavli Arastu ast.
Kuftai onro biposhand, az uzvhoi beruni khun ravon boshad, qat megardonad; ba zakhmho biposhand, onhoro ba ham ovarda sihat mebakhshad. Inro bikhurand va bimoland, zahrhoi khurdashuda va az gazidani moru kajdum boshand, daf mekunad. Marvoridro ba khud biyovezand, dilro quvvat mebakhshad. Dar dahan nigoh doshtani on baroi makhav foida dorad, gam va sustii dilro barham medihad. Istemoli marvorid ba darun ba qavle baroi khichak zararnok ast, davoi in marjon khurdan ast. Miqdori yak bor khurdan az marvorid dar yak ruz to 2,25 gramm ast. Ba joyi in sadafi safedro istemol namoyand, ravost.
Ogoh namoem, ki marvorid az rasidani ravgan, buyi bad, chirk va dud badrang va bekora megardad. SHustani on dar obe, ki birinj pukhta boshand, nimgarm yo obi birinj tar karda shudaro bimoland, onro sof mekunad. Va yo agar rang va khislati marvorid vayron shuda boshad, ba kabutar va murg bikhuronandu badi kame fursat onro kushta, az shikamash berun ovarand, niz sof megardad. Tariqi hal (mahlul) kardani marvorid chunin ast. Inro soida, dar shisha andokhta, az boloyash to purra pushonidan obi turunj birezand, dahani shisharo mahkam namuda, dar zarfe, ki dar on sirko boshad, muallaq biyovezand, bad on zarfro dar sargini asp to 14 ruz gur kunand, inak hal khohad shud. Baze mutakhassison guftaand, ki bar boloi sirko ovekhtan shart nest, balki khudi hamin dar sargin gur kardan kifoya meboshad.