75%RatingSave Gender Feminine Usage Lithuanian Meaning & History From Lithuanian deimantas meaning "diamond". Related NamesFamily Tree·Details RootdiamasOther Languages & CulturesDiamond(African American) Diamond(English) Adamantia, Diamantina, Diamanto(Greek) PopularityDetails Last ranked #20 in 2010 Lithuania Name DaysName Days? Lithuania: February 12 Categories gemstones, love island Spain, wealth