If Silwana Diamond Company or any company does not meet the following conditions, then it is not permissible for you to invest in that company: 1. The field of investment must be permissible. 2. There should be no guarantee of the capital. 3. It is obligatory to agree on a percentage of the profit. 4. The company should avoid borrowing money with interest or putting its wealth in interest-bearing accounts (Riba).

Islamic guidelines for permissible investment in companies: 1- The company invests in permissible ventures; 2- There should be no guarantee of the capital; 3- The profit should be known and agreed upon.

If the company sells permissible products, and does not take riba-based loans, and does not deposit its money in riba-based accounts, then there is nothing wrong with buying their shares and benefiting from this incentive.

There is nothing wrong with giving money to the company to trade in currencies with it, on the basis that the company will have 20% and the remainder will go to the shareholders.

From examining the eToro website, it is clear that trading is done through the use of financial leveraging (margins), including interest-bearing overnight fees, and CFDs which are haram.