To assess the quality and value of jewelry, look for key factors such as the materials used (e.g., gold karat, silver purity), the craftsmanship and attention to detail, and any certifications for gemstones or diamonds. Reputable jewelry retailers often provide detailed product descriptions and high-quality images. Reading customer reviews and comparing prices across different sellers can also help you gauge the value of a piece. When in doubt, consult with a trusted jeweler or gemologist for expert advice.