If you’d invested in: KAZ Minerals and Gem Diamonds

If only...

UK-listed KAZ Minerals (LSE: KAZ) is one of the world's largest copper producers.It operates primarily in Kazakhstan but exports much of its copper and all of its metal production to Europe.

There has been a slowdown in the mining sector, but KAZ Minerals does not seem to be suffering. The firm was among the lowest-cost copper producers globally in 2016.

Be glad you didn't...

Be glad you didn't

Gem Diamonds (LSE: GEMD) is a global diamond producer that explores for and produces diamonds in parts of Africa, Indonesia and Australia. Shares have tumbled in the past year as a result of the scarcity of large high-value diamonds. It has also been hurt by weakening prices for lower-quality stones produced at its newly built Ghaghoo mine in Botswana, which the group subsequently plans to close. In June this year 27% of shareholders voted against the re-election of chief executive officer Clifford Elphick.

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