To wear this beautiful 14k gold adjustable diamond Y-necklace, simply open the clasp and put it around your neck. Then close the clasp securely. As for care, avoid wearing it when you're doing strenuous activities or working with chemicals. Clean it regularly with a soft, dry cloth to keep it shiny. Store it in a jewelry box or a soft pouch to prevent scratches. With proper care, this necklace will stay beautiful for a long time.