Trading Gold and the Australian Dollarby Kathy Lien
Generally speaking, when gold prices rise, the Australian dollar appreciates as well. The proximity of New Zealand to Australia makes Australia a preferred destination for exporting New Zealand goods. Therefore, the health of New Zealand's economy is closely tied to the health of the Australian economy, which explains why the NZD/USD and the AUD/USD have had a 96% positive correlation over the past three years (2003-2005). Interestingly enough, the NZD/USD actually has an even stronger correlation with gold than the AUD/USD does - the correlation has been 90% over the past three years.
Source: http://www.investopedia.com/articles/forex/06/CommodityCurrencies.asp; http://www.bktraderfx.com/site/members-benefits; http://www.gftforex.com/