The Royal Collection Series was inspired by the spirit and elegance of Princess Diana. It is the top collected series, and features the Princess, The Little Princess, The Buckingham, The Duke, The Duchess, The Squire, The Lady, and the Windsor bracelets. The entire Royal Collection Series of bracelets is now available in platinum. The series started with fourteen months of development and design challenge, which, ultimately, allowed Ronaldo to alter a specific design into a number of combination's. Ronaldo considers this series the “Crown Jewel” of his entire collection in the bracelet category.