“The champagne diamond-and-amethyst bracelet Taylor Swift wore to the Grammys was created by Jaimin, a young patient who already had a passion for jewelry design. “Jaimin started making jewelry before he got sick,” Schwartz tells PEOPLE. “He came prepared with all the jewelry making tools.” And he was especially excited to design for Swift, whom his mom says he listens to constantly. “He wanted diamonds to sparkle because Taylor sparkles,” Schwartz says of Jaimin’s inspiration — and shares that haute N.Y.C. department store Bergdorf Goodman is already requesting “the Jaimin bracelets,” not realizing that he’s just a kid”