Most people know gold is valuable. Far fewer understand why the price they're offered on a Tuesday can be meaningfully different from what they'd receive on a Friday. If you've ever felt like gold pricing was opaque or arbitrary, here's what's actually driving it.
It Starts with the Global Spot Price
The foundation of any gold valuation is the global spot price: a real-time figure set through international trading markets, typically quoted in US dollars per troy ounce. This number shifts constantly as buyers and sellers around the world transact. It reflects current supply and demand, and it's the benchmark that gold dealers, banks, and investors all work from.
What moves the spot price? Quite a few things. Economic uncertainty tends to push gold higher, as investors look for assets that hold value when other markets are struggling. Inflation, interest rate decisions by central banks, geopolitical tensions, and shifts in currency markets can all cause the price to rise or fall, sometimes sharply and within hours.
The Exchange Rate Factor
For New Zealanders, the spot price is only part of the story. Because gold is priced globally in US dollars, the NZD/USD exchange rate plays a significant role in determining what you'll actually receive when selling locally. A weaker New Zealand dollar generally means a higher local gold price, since more NZD are required to match the same USD figure. Conversely, when the kiwi dollar strengthens, local gold values tend to soften even if the global price holds steady.
This is why sellers sometimes find that local gold prices move even when international headlines suggest the market is flat. Keeping an eye on the exchange rate, alongside the spot price, gives a more complete picture of local conditions.
Purity and Weight: The Factors You Can Control
Beyond market forces, the physical characteristics of your gold have a direct bearing on its value. Gold purity is measured in karats (for jewellery) or fineness (for bullion), with 24 karat or 999.9 fine gold representing the highest purity. The higher the purity, the closer the value sits to the spot price.
Investment-grade gold bars and coins are typically valued very close to spot because their purity is standardised and verifiable. Gold jewellery, on the other hand, is usually alloyed with other metals to improve durability, meaning its gold content may be 9, 14, or 18 karats rather than 24. The value is calculated based on the actual gold content, not the total weight of the piece.
Weight is equally straightforward: more gold means more value, all else being equal. This is why a thorough and accurate weighing process is a basic requirement of any reputable appraisal.
Local Demand Plays a Supporting Role
While the global spot price dominates, local market conditions in New Zealand can also influence what buyers are willing to pay. During periods of economic stress, domestic demand for gold as a store of value tends to increase, which can support stronger local prices. Seasonal and cultural factors can also affect demand for jewellery gold in particular.
What This Means When You're Ready to Sell
Understanding how gold is priced puts you in a stronger negotiating position. A fair offer from a reputable buyer should be clearly tied to the current spot price, the exchange rate, and the verified purity and weight of your gold. If a buyer can't explain how they've arrived at their figure, that's worth questioning.
Specialist buyers like Gold House apply current market rates transparently, so you can see exactly how your valuation is calculated.
Getting your gold appraised doesn't commit you to selling. It simply gives you accurate information to make a decision you're confident in, at a time that works for your circumstances.
