The Amazon Curated CollectionDiscover the Amazon Curated Collection of fine and fashion jewelry. The expansive selection of high-quality jewelry featured in the Amazon Curated Collection offers everyday values that range from precious gemstone and diamond pieces to the latest fashion designs.This hand-selected assortment features an array of diamond, gemstone, and precious metal designs that receive a quality inspection, including from Amazon’s staff graduate gemologist, to ensure they meet Amazon’s high standards. All diamonds featured in the Amazon Curated Collection are certified by our suppliers to be conflict free, and IGI, GIA, or AGS certifications are provided on white diamonds of .75 carats or larger on all stud earrings, rings, and pendant necklaces.Pieces from the Amazon Curated Collection come packaged in a custom box, making them wonderful gifts. In addition, we offer free one-day shipping within the continental U.S. on items over $500. International shipping options for friends and family overseas are available for an additional fee.The Amazon Curated Collection offers a specialized customer service team that is available seven days a week to answer any product questions before, during or after the purchase. If you’re not satisfied for any reason, you will receive a full refund and free return shipping within the U.S. if you return your purchase within 30 days.Find a special gift for a loved one or a beautiful piece that complements your personal style with jewelry from the Amazon Curated Collection. Gold PurityThe purity of gold is measured in karats. Pure gold measures 24 karats but is too soft in this state to be used effectively in jewelry. So it is alloyed with other metals--silver, copper, nickel, and zinc--to increase its strength and durability. Common measurements once the alloy is added are 18 karat (75% gold), 14 karat (58%), and 10 karat (47.7%). In the United States, the legal karat limit for the metal to still be considered gold is 10 karats. A higher karat measurement in gold content indicates a greater value of the jewelry piece. Gold jewelry should always be stamped with the karat mark, either 18k, 750 (European marking for 18k), 14k, 585 (European marking for 14k), or 10k. In addition, to assure its quality, the piece should be stamped with the manufacturer's trademark or country of origin.Gold ColorThe color of gold may vary based off of the type of metal alloy included and the percentage of the metal alloy used. Most commonly, gold is available in yellow, white, and rose coloring.Yellow gold is the most common color and is usually alloyed with silver and copper. Yellow and white gold are similar in strength and malleability, making them perfect for jewelry that is worn daily.White gold is alloyed with nickel, copper, and zinc--and while it looks similar to platinum, it has vastly different properties.Rose-colored gold is alloyed with copper and is often used to accent white or yellow gold. The saturation of color varies from piece to piece and according to gold content.Caring For Your Gold JewelryTo keep gold shining and scratch-free, avoid contact with chlorine and other harsh chemicals. Do not wear jewelry during rough work and be sure to store it in a fabric-lined jewelry box or pouch. To clean gold jewelry, use warm water, a mild soap, and a soft bristled brush, if needed.