Diamond Hands: hanging on to a situation that has a lot of financial risk as well as lots of financial reward going for it ................................................... "If you're going to invest in that stock, make sure you've got some diamond hands because it is volatile. Up $20 one minute, down $20 the next." cool-slang-words clement127 / flickr Cool, Unique and Unusual Slang Words and Phrases 83+ and counting... Using Informal Words Can Be Very Invigorating A Lick and a Promise: