Yellow diamond rings and jewellery are a great investment, especially when seeking a piece that is expected to accrue value. Many people choose coloured diamond jewellery as a family heirloom to pass down through the generations, exemplifying its sentimental as well as its monetary value. Untreated and natural diamonds, especially yellow diamonds, are increasingly rare in modern precious jewellery, so the historic pieces at Berganza are imbued with this additional value.