How rare it is , how hard it is to get out of the ground .
Xenon is a non-metal, an inert (or noble) gas. Xenon is not a metal
It is plentiful, it is cheap to purify on an industrial scale, it is a strong metal useful for many things, by adding a few substances it becomes steel which is even stronger and has better properties.
The less granite there is being made, or mined. The more expensive it will be.
Metal, yes; soft ... not so much. Gold is a transition element, but so are iron and titanium.
You cannot. Iridium is a very rare and expensive metal. You could not afford a lightning arrester made of iridium.
Platmium is expensive because it is a type of metal.
Because they were made of some good metal or something.....
Yes, gold is an expensive metal.
because they are expensive
Gryphon makes pretty expensive sticks and so does TK.
Eucalyptus tables are expensive because it is not very common and is in high demand - which makes anything like that more expensive. It cannot be found everywhere so it makes getting the product harder.
Thorium oxide is not particularly expensive. Thorium metal is very expensive, but this may be because there is so little demand for it that it has to be specially made when someone wants it.
Palladium is a metal which makes a very expensive jewelry that is very pretty. It is similar in appearance to platinum or white gold.
The onyx gemstone is not very expensive, so depending upon what metal is used for the setting and the ring, an onyx ring may not be expensive at all.
Most luxury cars have great quality, something that makes them expensive, and not so many people buy luxury cars, so its both high quality parts and rare parts, something that makes the parts expensive.
There are many reasons that Prada sneakers for men are so expensive. The most noted reason for why Prada is such an expensive brand is due to the process in which they are manufactured.
glass is much more expensive as metal is retail and glass in man made