About SISGEM JEWELRY: SISGEM JEWELRY was born to provide a favorite jewelry for every girl and women. About the craft: From the selection of materials to every detail in production, to the final product, each product has been carefully designed and strictly controlled. Looking Forward to YOUR STORY: Every piece of SISGEM jewelry will have a beautiful story. It may be about the person who gave the gift, or maybe about the girl who is wearing jewelry. We look forward to the starting of such a story. Expecting that SISGEM jewelry make your heart sing every time you wear them and that speaks to your core. Mom Wife Daughter Sister Girlfriend Best Friend It Will Be A Beautiful Story Between YOU and HER. About the 18 karat gold : The fineness of a precious metal object represents the weight of fine metal therein, in proportion to the total weight which includes alloying base metals and any impurities. Alloy metals are added to increase hardness and durability of jewelry, alter colors. Karats measure the parts per 24, so that 18 karat = 18⁄24 = 75% (18 karat = 18 carat / 18 k /18 kt / 18 ct ) Read more Product Specifications: Product Material: 18 carat gold Measurement: Pendant: 18.5 mm*13 mm 16+2 inch gold chain Package Includes: 1 x 18k Gold Heart Necklace 1 x Box Read more Caring for your jewelry: 1. Separated it from hard items to prevent scratches and store it in a fabric-lined jewelry box or pouch. 2. Do not expose to harsh chemicals such as cosmetics, hairsprays, perfumes, chlorinated water. 3. To clean gold jewelry, use warm water, a mild soap, and a soft bristled brush if needed. Read more Heart Bracelet Flower Necklace Pearl Earrings Metal 18k Gold 18k Gold 18k Gold