Coloured gem market mysterious and poorly understood
The coloured gem market — sapphires, rubies and emeralds — is just as valuable as the diamond market.
At a time when many investments offer low returns, many investors will fill a bag with precious stones and hope they will be worth a fortune some day.
Check this chart about the rising prices of gemstones.
Unlike diamonds, though, the $10 billion coloured gems market is mysterious and poorly understood.
This Wall Street Journal video illustrates the issues.
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