i got an amethyst necklace for my birthday last month. it is quite small. just recently i have been reading into metaphysical things and came across the properties of the amethyst. i am wondering if my tiny amethyst will be sufficiant in terms of ability to give the wearer the properties of the amethyst? or do i need a big one>? i actually find it interseting that i was given this and then a few weeks later had found in a book the properties of the amethyst.