[mothered]

I was thinking about a ring or a bracelet. It would probably be something less than 40g.

Perfect for the EB/missing Item method.

If something not to expensive can be found on the website maybe one transaction a couple weeks before the order

Yes, It's good practice to perform at least one transaction prior to hitting the SE.

I meant hitting big brands websites (such as Cartier or Tiffany) instead of hitting third party website.

Understood.

That's the correct approach.

You think a third party website would be easier ?

It's Impossible to generalize.