mosaicist

Etymology tree
Ancient Greek Μουσεῖον (Mouseîon)
Ancient Greek μουσεῖον (mouseîon)der.
Late Latin mūsīvum
Medieval Latin musaicumbor.
Italian mosaicoder.
Middle French mosaïqueder.
English mosaic
Proto-Indo-European *-id-
Proto-Indo-European *-yéti
Proto-Indo-European *-idyéti
Proto-Hellenic *-íďďō
Ancient Greek -ῐ́ζω (-ĭ́zō)
Proto-Hellenic *-tās
Ancient Greek -τής (-tḗs)
Ancient Greek -ῐστής (-ĭstḗs)bor.
Latin -istader.
Old French -istebor.
Middle English -ist
English -ist
English mosaicist
From mosaic + -ist.