First of all Diamond Isn't even an element, Platinum is the most expensive element of all.
Platinum is a rarer element on the earth.
Platinum
Platinum
Plutonium: Cost: About $5000 per 100 grams bulk and about $13000 per 100 grams pure. Synthesis: Man-made in nuclear reactors Charactersitics: Highly Radioactive Half-Life: 87.74 year platinum
There are a number of expensive metals but gold, platinum and titanium is what comes to mind for me.
Plutonium is very expensive but tritium, carbon as diamond and californium-252 are more expensive.
Platinum is an element
Platinum is an element.
silicon dioxide is a compound and diamond is an element
Platinum is a chemical element.
This is a chemical element as gold or platinum.
Platinum is an element.