Ilknur
No. Ilknur is a Turkish compound name: the first element 'ilk' is Turkish ('first') and the second element 'nur' is an Arabic loanword meaning 'light'.
No. The compound name Ilknur does not appear in the Quran; the element 'nur' (light) does occur in the Quran, but Ilknur itself is a modern Turkish formation.
Pronounced ILK-noor (ILK-nur), following Turkish phonology where 'ilk' rhymes with 'ilk' in English and 'nur' like 'noor'.
Yes. It uses the respected Arabic element 'nur' (light) and a Turkish lexical component; it carries positive meanings and is used by Muslim families in Turkish contexts.
Common diminutives in Turkish-speaking families include 'Ilk' or 'Nur', though 'Nur' is an independent name and often used as a pet name.