Pohaku Silica-Free no ka Hoopae Kalaiaina
Hoʻopaʻa ʻo Mohs 7 Hardness i ka pale ʻana no nā ʻāpana kiʻekiʻe. ʻO ka ikaika hana pālua (compressive/tensile) e pale i ka efflorescence, deformation, a me UV-induced cracking - kūpono no ka papahele i ʻike ʻia e ka lā. Me ka hoʻonui wela haʻahaʻa haʻahaʻa, mālama ia i ka kūpaʻa a me ke kūpaʻa chromatic ma waena o nā wela wela (-18°C a 1000°C).

ʻO ka inertness kemika kūlohelohe e kūʻē i nā waikawa, alkalis, a me ka corrosion i ka wā e mālama ai i ka colorfastness maoli a me ka ikaika no ka wā lōʻihi. Hoʻokuʻu ka ʻili o ka zero-absorption i nā wai, nā ʻili, a me ka microbial infiltration, e hiki ai i ka mālama maʻemaʻe. Hoʻopaʻa ʻia ʻaʻole radioactive a hoʻopaʻa ʻia me 97% mau minela recycled no ka hoʻohana hou ʻana.