Rado R14056945 DiaMaster Automatic Open Heart Diamonds Watch for Women Online. The elegant and subtle side of Rado’s ultra-durable watches, the DiaMaster family draws its inspiration from classic simplicity. The new DiaMaster collection of Rado features a minimalistic design, with large open dials for easy readability and an unobscured view. Unveiled with a complete redesign, the collection is delightfully diverse, supersized chronographs to dainty, diamond-studded bijous that are the perfect watch for you.