ʻO ke daimana keʻena (kahi i ʻike ʻia he daimana moʻomeheu, daimana mahiʻai, daimana i ulu ʻia ke keʻena hana, daimana i hana ʻia e ke keʻena hana) he daimana i hana ʻia i loko o kahi kaʻina hana, e kū'ē i nā daimana maoli, i hana ʻia e nā kaʻina geological.
Ua ʻike nui ʻia ke daimana lab ma ke ʻano he HPHT daimana a i ʻole CVD daimana ma hope o nā ʻano hana hana maʻamau ʻelua (e pili ana i ke kiʻekiʻe kiʻekiʻe kiʻekiʻe-mehana a me ka chemical vapor deposition crystal formation, kēlā me kēia).