(NEW YORK) - Jewelers of America (JA), the national trade association for businesses serving the fine jewelry marketplace, is offering its renowned Sales and Management Professional Certification exams at the JCK Show. In 2015, the number of jewelry professionals who completed JA Professional Certification increased 100% over 2014. As participation grows, so too does consumer and trade awareness of the importance of becoming certified. Benefits of JA Professional Certification include career advancement, differentiating the retail store from competitors and enhancing fine jewelry customers’ trust in the jewelry professional. Certifications are open to all jewelry professionals with no studying required as the exams validate existing skills and knowledge.