Piv nrog rau lwm cov pob zeb ntuj, cov pob zeb volcanic muaj cov khoom zoo dua. Ntxiv rau cov yam ntxwv dav dav ntawm cov pob zeb ib txwm muaj, lawv kuj muaj lawv tus kheej cov qauv tshwj xeeb thiab cov haujlwm tshwj xeeb. Piv txwv li basalt. Piv nrog marble thiab lwm yam pob zeb, pob zeb basalt muaj cov radioactivity tsawg, yog li nws tuaj yeem siv tau zoo hauv tib neeg qhov chaw nyob, thiab yuav tsis ua rau cov neeg siv khoom uas xaiv pob zeb rau kev kho kom zoo nkauj sab hauv tsis hloov kho. Pob zeb volcanic yog tawv thiab tuaj yeem siv los tsim cov pob zeb ultra-thin. Tom qab sib tsoo zoo ntawm qhov chaw, qhov ci ntsa iab tuaj yeem ncav cuag ntau dua 85 degrees, xim ci thiab ntshiab, thiab qhov tsos yog elegant thiab solemn. Nws yog siv dav hauv txhua yam kev kho kom zoo nkauj phab ntsa sab nraud, txoj kev hauv nroog thiab txoj kev hauv pem teb ntawm cov chaw nyob. Nws tseem yog pob zeb nyiam rau txhua yam tsev qub, tsev European thiab vaj. Nws tau txais tos los ntawm cov neeg siv khoom hauv tsev thiab txawv teb chaws. Cov ntaub ntawv pob zeb volcanic tiv taus huab cua, huab cua thiab kev ua haujlwm ntev; kev nqus suab thiab txo suab nrov yog qhov zoo rau kev txhim kho qhov chaw hnov; yooj yim thiab ntuj, zam kev ci ntsa iab yog qhov zoo rau kev txhim kho qhov chaw pom; Kev nqus dej, tiv thaiv kev nplua thiab kev tiv thaiv cua sov yog qhov zoo rau kev txhim kho qhov chaw somatosensory; qhov tshwj xeeb "ua pa" muaj peev xwm kho qhov av noo thiab txhim kho qhov chaw ib puag ncig. Txhua yam zoo tshwj xeeb tuaj yeem ua tau raws li cov qauv tshiab ntawm tib neeg hauv lub caij niaj hnub no hauv kev nrhiav kev yooj yim thiab ntuj, tawm tswv yim ntsuab thiab kev tiv thaiv ib puag ncig. Pob zeb volcanic casting pob zeb yeeb nkab cuab yeej.