I can either be well known, with my skills and fame finely honed. Or a cartographer’s boon Whose mark will be described soon.

I have been a form of currency I’m essential for life, but too much of me can lead to death

I'm a gem, typically black with a little white. Used by Greeks for luck in a fight. I've tried to put my final X on July, But Ruby edged me out. Why, Ruby, why?

I cradle elixirs, dark or bright, my stem elevates me into sight. I witness vows, toasts, and lore, held in hands, I ask for more.

I'm signified by a Norse god, a Greek god, water, or a hump. I must be strong, for I'm as far from weakened as you can get.