Metals for different Planets or Stones

Hi to all

This time I decided to discuss some thing regarding metals of different planets or stones. Few days back some of my friends wanted to know metals for different planets specially the planets which were having same metals like Jupiter and Sun but that is wrong Jupiter having gold and Sun copper and Mars iron. Then some one asks about Saturn, the metal for it is Lead if not solidify then 3 parts lead and one part iron is mixed togather to make a ring. Mercury having mercury  metal but it is difficult to solidify  it but some alchemists have formula to solidify it if you could not find them then mix 3 parts mercury with 1 part silver to make ring. Venus having Platinum and Moon silver.
One interesting thing that i come across that many people thinks that stone should be at least 3 carats weight for wearing, but i come across an old jyotishi who told  me that in ancient times there were no carats it was rattis, there was a pakki ratti and kachi ratti . pakki ratti means 180mg and kachi 120mg and 1 carat is equal to 200mg and 3 kachi ratti is for gem wearing measurement it means 360mg about 2 carats.

And one  thing requested to readers please comment on articles and any one need to know regarding any thing is welcomed.