Jasper is a variety of quartz that may contain up to 20 percent foreign materials or inclusions, including organic material and mineral oxides, which determine the color, pattern and appearance of the stone. Uniformly colored Jasper is uncommon but not unheard of; usually Jasper is multi-colored, spotted or banded. This stone is opaque, even in thin slices, and takes a high polish. Different types of Jasper display different luster. Like Agate, the wide selection of Jaspers includes a range of trade names and classifications that are used by jewelry makers and collectors. Vermeil is a combination of Sterling Silver and Gold commonly used as a component in jewelry. A typical example is Sterling Silver coated with 18K or 24K Gold. To be considered VERMEIL, the gold must be at least 10 karat.
eBay