This jewelry customer's high-yield stage includes purchase decision-making stage, purchase stage, use stage and so on.

1. Decision-making stage: When customers consider buying jewelry, they will do a lot of research and comparison, which is a high-yield stage.

2. Purchase stage: When customers buy jewelry, they usually make multiple purchases, which is also a high-yield stage.

3. Use stage: When customers use jewelry, they may need to repair, maintain or replace it, which is also a high-yield stage.