Every few years, an investment scam surfaces and clears the coffers of naive investors. Whether it is some miracle water or precious gold bars, smooth-talking salespeople will try to get you to part with your life savings in exchange for them with promises of buying them back later at a higher price.

We see scams like this all the time. The business model is often unsustainable and sounds too good to be true. The latest

Here are 7 things you should know about scam investments and if you ever come across one, avoid at all costs!

Introduce a product that is perceived to be rare or highly valuable

Scam investment operators will introduce a product into the marketplace that has a high perceived value or appears to be of limited quantity. It could be a 1 kilogram gold bar during 2011-2012 when gold prices were skyrocketing or outskirt real estate …