Gems are a safe bet for your wallet because their value tends to increase over time. The rarest and most in-demand gems, such as exceptional quality diamonds, can retain their value for decades or even centuries. Stones are also a solid investment compared to today’s investments such as stocks and bonds which are unsecured.
It is also a tangible and lasting heirloom as they can be passed down from generation to generation and are often seen as status symbols, which can make them even more valuable to future family members.

You should also know that gems have been used as currency for thousands of years, long before the appearance of paper money. In many ancient cultures gemstones were used to pay for goods and services, and were often seen as a measure of wealth and prestige and today they continue to be seen as a form of monetary value.
So gems keep on standing the test of time.