铯柱石（英语：Pezzottaite），原本被认为是绿柱石的中的一种，后来在2003年九月被国际矿物学协会（IMA）辨识为新的矿物。铯柱石是绿柱石的相似物，成分为含有铯、铍、锂和铝的硅酸盐，其化学式Cs(Be₂Li)Al₂Si₆O₁₈。而名称则以意大利地理学及矿物学家Federico Pezzotta命名之。铯柱石过去被认为是红色绿柱石或做为新品种的绿柱石「铯绿柱石」，尽管颜色和红绿柱石相似，但是铯柱石跟一般的绿柱石不一样的是，铯柱石含有锂且为三方晶系而非六方晶系，且折射率较高，在XRD下的分析结果也不太一样。

Pezzottaite, marketed under the name raspberyl or raspberry beryl, is a newly identified mineral species, first recognized by the International Mineralogical Association in September 2003. Pezzottaite is a caesium analogue of beryl, a silicate of caesium, beryllium, lithium and aluminium, with the chemical formula Cs(Be₂Li)Al₂Si₆O₁₈. Named after Italian geologist and mineralogist Federico Pezzotta, pezzottaite was first thought to be either red beryl or a new variety of beryl ("caesium beryl"); unlike actual beryl, however, pezzottaite contains lithium and crystallizes in the trigonal crystal system rather than the hexagonal system.