What is the ruling on buying diamonds from the Internet if it is for the purpose of wearing them and not for trading, and does it fall under the same ruling as gold and silver regarding the impermissibility of selling or buying them online?

It is not permissible to sell gold and silver online due to the delay in receiving the price, which is not allowed for these two metals. As for diamonds, it is permissible to sell them online, but on condition that they can be accurately described or sufficiently pictured to avoid dispute; because diamonds are difficult to define by description, and their value varies greatly, so it is not permissible to sell them by description if it is not precise.