<|im_start|>user
What does a 9 carat gold mean<|im_end|>
<|im_start|>assistant
Pure gold with no additives is knows as 24 carat gold. An item marked as 9 carat gold contains 9/24th (or 37.5 percent) of pure gold and the rest are additives, typically a mix of silver, copper, zinc, etc.<|im_end|>
