Diamonds act as a hedge against a falling Australian Dollar
Diamonds, like gold and other precious commodities, are priced in US dollars. For Australian investors, this provides a natural currency hedge: when the Australian dollar (AUD) weakens relative to the US dollar, the value of diamond holdings measured in AUD rises, often amplifying overall returns.
History illustrates this clearly. During the mining boom of the 2000s, surging demand for iron ore and coal from China pushed the AUD to record highs, peaking around USD 1.10 in 2011. As commodity prices cooled and Australia’s terms of trade eased, the dollar steadily declined, spending much of the past decade in the USD 0.65–0.75 range. Investors who held USD-denominated assets like diamonds through this period not only benefited from the underlying price appreciation of rare stones, but also from the currency effect as the AUD weakened.
Looking ahead, the balance of risks still favours the diamond investor:
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Support from Currency Trends: With the Reserve Bank of Australia moving cautiously on rates while the US Federal Reserve maintains tighter policy, the interest rate gap continues to weigh on the local dollar. Any further softening in Chinese demand or periods of global risk aversion could also keep the AUD under pressure. For diamond holders, this translates into enhanced returns in AUD terms.
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Protection Against Volatility: Even if the AUD were to strengthen modestly on the back of stable commodity demand or a weaker US dollar, diamonds retain their value in global markets. Unlike currencies, their worth is not dictated by monetary policy swings, but by permanent scarcity and international demand.
For investors, this creates a powerful dual benefit. Pink diamonds are already positioned for long-term capital growth thanks to their finite supply and global desirability. Added to this is the natural foreign exchange hedge: any further weakness in the Australian dollar will magnify gains.
In short, buying diamonds today not only secures a place in one of the rarest asset classes on earth, but also provides a built-in shield against currency volatility — a quality that few other investments can match.