You become a Major Donor of the Rotary Foundation when you alone or together with your partner have donated 10 000 US $ to the Rotary Foundation. There are four levels of MDs. Achieving these steps is recognized by the Rotary Foundation with a crystal and pin/pendant. Your name can be made public, or you may remain anonymous, if you wish.
You can decide whether your donation will be used for the target you choose directly or whether you want it to be invested and its profits used for your defined target. In the first case you can choose between several options - see here for details. If you want your donation to be invested long-term, you give it to the Endowment Fund of the Rotary Foundation. The options available are detailed here.
In addition to directly transferring money as your donation, you can make a major gift of $10,000 or more with appreciated securities, such as publicly traded stock.