lens – How to get to the next level

I have been doing jewellery, silver / gold object photography and photoshop retouching for 4 years. I want to go to the next level and achieve pictures like these. What kind of set up do i need? I have attached two images of what I am currently capable of, thank you.

What I am aiming for –

https://www.facebook.com/FortunaAuction/photos

MY email : Leagueplays@gmail.com