Is network marketing for diamonds permissible if it is based on buying diamonds from the company, then bringing two other customers to buy, and the first marketer receives a commission from them and from everyone who comes through them in a hierarchical manner?

After reviewing the programs of network or pyramid marketing, it became clear that it is impermissible to engage in them or to endorse them. This is because they are based on the loss incurred by the lower tiers of members for the benefit of the upper tiers, which constitutes devouring people's wealth through falsehood, deception, and selling illusions. The real aim is not the product itself, but rather the profit from commissions, and this involves prohibited gharar (definition) (excessive uncertainty or deception), because the probability of loss is much greater than that of gain. The products sold by the company are merely a facade for joining a program based on gharar and consuming wealth through falsehood, and it is not simply a matter of brokerage.