If particularly blunt or sharp I can hurt,
Gold, which has been used as the currency of choice throughout history, could also be the material of choice for weapons such as swords, battle axes, and hammers.
I'm everywhere from pay checks to your shirt,
The price is on our paychecks and our shirts' tags.
I've more variations than there are objects on Earth,
There are infinite variations of numbers to represent currency.
I can be measured and used and a mark of your worth,
It can certainly be measured and the number could tell how wealthy a person is.
I can destroy and I can heal,
Money allows us to do so many things, either destructive or helpful.
Can be broken or conceal,
To save your money, you may split or hide your cash somewhere.