Generally that would be a description of precious or semi-precious gems. Some ores containing precious metals may still be considered minerals and be expensive. In that case you would refer to them as "precious metal ore".
I suppose you could class the rocks brought back from the Moon, as the most expensive stones and minerals ever.
Ruby,Emerld,Topaz,Dimond and Sapphire are most expensive
Orissa minerals and development corporation
minerals
They are just called minerals.
Extracting minerals from the ground is called mining.
A mixture of minerals is called an ore
A mixture of minerals is called an ore
rock forming minerals
There are various possible answers, as "rockhoundese", the language of mineral collectors, comes and goes, and varies by country. Some possibilities are: - killer - top shelf - choice - grade A - real humdinger - sick - display quality There are no doubt others.
Someone who analyses minerals is called a mineralogist or mineral analyst.
A rock consists of lots of minerals, which are made up of elements such as gold and silver. A rock can contain valuable minerals such as diamonds. Diamonds are the most expensive minerals. You can mine rocks and minerals at a mine