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.
The market price of silver varies. As of the most recent market's closing, silver is worth $17.2222 per ounce, down 0.04% ($0.0063) from its previous price. (Remember, that's the price for a troy %ounce of silver.) The price of silver per gram is $0.55. This is, of course, the current price per ounce divided by 31.103 (the number of grams in a troy ounce). Finally, the price of silver per pound is $206.67. This is the spot price times 12 (the number of troy ounces in a pound). What is a Troy Ounce of Silver?