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.
Silver is under $20 an ounce and that is for fine silver. Sterling silver is only .925 or so silver. Places that buy silver and gold jewelry are only paying 65 to 75 percent of what they get from the refinery. One troy ounce of sterling silver will likely get you $13 to $15 at one of these gold and silver places.