Half Page Magazine Advertisement

I have the opportunity to place an ad in a nationwide magazine. It will be a 1/2 page ad for my online jewelry store steelworks-jewelry. The magazine is a lifestyle publication dealing with people who have allergies, and our jewelry is 100% anti-allergic, hypo-allergenic. This ad must look professional and get our message across quickly. Ad will be B&W plus one color. I will relay the fine details and other requirements to the winning bidder. If you have experience with print type adverts, or this kind of artwork, please bid.