Gold prices are trading at a nine-month low as the safe-haven appeal for the yellow metal seems to be fading away, analysts said.Speaking to CNBC-TV18, Edward Morse, Global Head of Commodities Research at Citi Group said that bull run may be over for gold.“With interest rates expected to rise, as recovery extends beyond the US, particularly to Europe and the advanced economies, we are also seeing recovery growing in India as well, we think the shine is off the shining metal itself. So, the gold boom looks like it is over depending on unknown wildcards that might happen on the global economy,” he said.Morse is unsure of how long the cryptocurrency run-up will last, however, he said that cryptocurrencies have emerged as a better option for investment.“We also noticed that, and we don’t know how long this is going to last, but investors are seeing bitcoin or cryptocurrencies as a significantly better alternative investment for gold. Investment flows into bitcoin have mirror-imaged investment flows out of gold,” he said.However, he said that cryptocurrencies are very energy-intensive.“I think there is going to be a pause and we are already seeing the beginning of that pause because it turns out that cryptocurrencies are amazingly energy-intensive. If you look at the total amount of energy that is being used to “mine” bitcoin and other digital currencies, it is really amazing. We estimate that bitcoin energy use is as much as total country energy used whether you look at Norway or Australia – that is the amount of energy that goes into mining bitcoin,” he said.Watch the video for more.