10k is the standard in some countries like US; 9k is the standard in other countries like Australia.
So what are you telling me? That every sapphire, ruby, emerald and diamond that is in a piece from USA is muddy and low quality? I am sure they will be glad to know that.
There is actually very little difference in the actual manufacture of pieces in those two countries. It's just that in USA they say that anything under 10k is NOT GOLD. Some of the Australia jewellery manufacturers are now producing 10k items for sale in USA, so I suppose they are now using low quality stones in their 10k stuff? Interesting?
