Where does “Diamonda” come from?

Diamonda (English) comes from English diamond, from Middle English dyamaunt, from Old French diamant, from Late Latin diamas, from Latin adamās, from Ancient Greek ἀδάμας, from Ancient Greek ἀ-, from Proto-Hellenic hə- — together, one.

Ancestry of “Diamonda”, step by step

Diamonda traces back through two separate lines of ancestry.

via English diamond

StepLanguageWordMeaning
1EnglishdiamondA glimmering glass-like mineral that is an...
2Middle Englishdyamauntdiamond; A valuable individual
3Old Frenchdiamantdiamond
4Late Latindiamas
5LatinadamāsAdamant; the hardest steel or iron; diamond; an object made of adamant
6Ancient Greekἀδάμαςadamant, the hardest metal; a hard metal...
7Ancient Greekἀ-The alpha privativum, used to make words that...
8Proto-Hellenichə-same; together
9Proto-Indo-Europeansm̥-one; with, together
10Proto-Indo-Europeansem-together, one

via English A

StepLanguageWordMeaning
1EnglishAThe ordinal number first, derived from this...
2EnglishANDAlternative form of ∧, the conjunction operator;...
3Middle Englishandand, and then; however, yet, but, though. while;...
4Old Englishandand; even; also
5Proto-Germanicandiin addition, furthermore, and
6Proto-Indo-Europeanh₂éntiopposite; near; in front
7Proto-Indo-Europeanh₂éntsforehead; front
8Proto-Indo-Europeanh₂ent-face; forehead; front
9Proto-Indo-Europeanh₂en-on, onto
Every word from Proto-Indo-European sem-Every word from Ancient Greek ἀ-Every word from Ancient Greek ἀδάμας