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.
Looking at the Silver price chart, you will see the spot Silver price hit its lowest point in the past five years on Dec. 14, 2015 at 12:30 p.m. (CT) when the spot price for Silver was at $13.81 USD per troy ounce. You can check out the price trends of Gold, Platinum and Palladium, too.