Which other coloured diamonds are smart investments?
Although all coloured diamonds are rare, some are found more often than others. As with most economic activity, supply and demand have a major influence on pricing here as well. Most commonly found of all coloured diamonds are grey, brown and some hues of yellow. Although just as beautiful, they make for poorer high-end investments because of their prevalence. Intense and vivid yellow, along with orange diamonds, are rarer and more valuable making them better suited for a portfolio. Purple, violet, green and blue belong to the same category as pink: rare and very coveted worldwide.
Most record-breaking diamonds of recent years were pink and blue, but none of them as scarce and priceless as red diamonds. They are by far the most expensive diamond colour. Also stemming mostly from the Argyle-mine, they will grow exceedingly rare after it closes in 2020.