[mothered]

its very hard to Se/Refund jewelry

Really? Quite the contrary. Unless we're talking about a 10k diamond ring, as you've mentioned, the missing Item method Is well-suited.

Or DNA since its high value it can happen people steal it in transit or by the door.

This Is Irrelevant- no one knows exactly what's Inside an enclosed package that's In transit, or placed at the doorstep. For all they know, It could contain a silver-plated keychain worth 20$.

What's the precise weight and value of the Item you're planning to SE?