the scope and attractiveness of alternative investments is increasing heres a weekly tracker of returns from such investments but dont compare these with returns from traditional investments since the proportion and purpose of alternative investments is vastly different overall diamond index is based on actual transactions from 20 different market players and reflects price movements in the global diamond market the index is updated daily the sp gsci precious metals index comprises gold 9133 and silver 867 and provides a benchmark for investment performance in the precious metals commodity markets it is updated daily the livex fine wine 50 index tracks daily price movement of the most heavily traded commodities in the wine market it includes only the 10 most recent vintages and is updated daily the krugerrand coin index represents the denomination of a 22 carat gold bullion coin weighing one troy ounce that is listed for trading on the johannesburg stock exchange