Complex sentence: The inspiration for the name wss the famous Koh-i-Noor (meaning "Mountain of Light") diamond, part of the Crown Jewels of the United Kingdom and the largest diamond in the world at the time.
Split into simpler sentences: The inspiration for the name is the famous Koh-i-Noor (meaning "Mountain of Light") diamond. Part of the Queen's crown jewels and the largest diamond in the world at the time.