Wealth can be interpreted in many ways, you can define it according to your point of view and we assume it can be a subjective sentence about the value that is valuable to you, but if you look at the general view, wealth is having a lot of value about finance.
Wealth varies and new materials can be used for wealth creation, in my locality few years back, plastic bottle recycling wasn't a source of funds, but today many men have ventured into the business, and store plastics in large quantities to sell and make income. While it's in the warehouse those cans can be called wealth.
Hence, what matters is being able to sustain the source of wealth, once it's gone, the funds or finance generated through it would disappear. For instance, selling a land blessed with natural resources, the seller losses the wealth buried under the ground, while the buyer would enjoy a new stream of income by mining the materials underneath the land.