Summary of the necklace? please help :(

We are doing a presentation about the necklace and I need a summary. :(

An ornamental chain or string of bead's jewels, or links worn round the neck. If it is made by any stone, then its look like so attractive. So I suggest you, if you have a look drfinejewels.com then you get an idea about stone and different stone jewellerys. So that you can write your summary easily way logical manner.