Let's review. An ephelis, or freckle, is a type of macule, which is a small (up to 1cm in diameter), circumscribed, flat, and thus nonpalpable change in the pigmentation of the skin. By nonpalpable, I mean you can't feel it. Or more specifically, you can't feel any difference between it and the surrounding 'normal' skin.
The troy ounce is the standard silver price that you see on the t.v. 1 troy ounce = 31.1034768 grams or 1.09714 U.S. Ounces. It is usually just referred to as an oz.
However, markets all over the world can take the spot silver price in USD and simply convert it to local currency. What exactly is the spot silver price referring to? The spot silver price is quoting the price for 1 troy ounce of .999 fine silver. Are spot silver prices the same all over the world? Yes, the price of silver is the same all over the world. Exchanges and markets all over the world can take the current spot silver price in USD and convert that price to local currency.