Investment-grade Diamonds are assigned for risk-averse buyers. Investment-grade diamonds are liquid assets and can be sold or moved around at any given time. In addition to the buyer placing his capital into a solid asset, he will also own a very rare asset in its physical form which can be enjoyed in the form of jewellery.
This type of purchase has a very low correlation with other investments such as bonds and stocks. So diamonds are an ideal purchase to diversify an existing portfolio.
There will always be demand for rare diamonds, especially now as diamond reserves are increasingly being eroded over time.
Investment-grade diamonds are also used as a collateral to obtain a bank loan or credit line from financial institutions. Please speak to your financial advisor about it.