Answer:
Round as a button, deep as a well. If you want me to talk, you must first pull my tail.
They're up near the sky, on something very tall. Sometimes they die, only then do they fall.
Two people are born at the same moment, but they don't have the same birthdays. How could this be?
With sharp edged wit and pointed poise. It can settle disputes without making a noise.
Reaching stiffly for the sky, I bare my fingers when its cold. In warmth I wear an emerald glove and in between I dress in gold.
Both a currency and an antlered male. What is it?