To send crypto from Gemini to Coinbase, you first need to open a Coinbase account. 1. Open the Gemini app on your mobile device and sign in. 2. Under the 'Crypto' tab, tap the type of cryptocurrency you wish to send. 3. Paste your Coinbase wallet address and select the amount you want to send. 4. Confirm the information and click on withdrawal. 5. All done, you will receive a conformation message of your crypto tranfer from Gemini to Coinbase. 6. You should be aware of Gemini crypto transfer fees that vary from crypto.