The longer it is, the more it hurts your chances of getting the job. Men should also shave or trim a beard or mustache. Nails should be well manicured and trimmed to an acceptable length. Polish should only be worn if the person has time to maintain it. Do not wear wild colors in a business setting.
Clear polish is usually a safe bet.
Jewelry should not be excessive or gaudy . Wear a classic watch and no more than on erring per hand. Earrings for ladies should be small, not dangling. Men should not wear an earring. Tongue rings and nose rings are not professional.