Necklace

The necklace a foolish boy made for a Queen was buried with her.

That foolish boy would grow to be replaced by a dark lord who could only question why another young boy had it.

Vader had seen the necklace pop out from the traditional light-weight Tatooine's clothes and many other times on the security footage recovered from the Death Star. That, before he'd even felt how powerful the pilot was, had sown the seed of obsession.

That young boy who held Padme's stature and his own power- as he would learn later on.

Later, Vader would also learn how his son would come to own the necklace and would later tell him how the necklace came to be.

But at the start of his search, it was a simple Japor pendant that caught the Dark Lord's attention as it once did a Queen's.