Feldstein’s offers free online reference guides for gemstones, metal, diamonds, and timepieces. Explore the qualities that make each gemstone and jewelry metal unique. Learn how to assess the quality of any diamond by looking at its cut, clarity, color, and carat, otherwise known as the 4 Cs of diamond buying. Discover the role that each part of your timepiece plays. Buying high quality luxury jewelry and timepieces doesn’t have to be intimidating. With our education guides and the help of Feldstein’s knowledgeable staff, you can feel confident in your purchase!