How much is this Amethyst Pendant worth?

[semi-preciousgems]

I'm trying to sell this amethyst stone set in sterling silver pendant. It's a beautifully faceted genuine amethyst stone which I'm tryting to sell for £45. Not sure if this is too much, but I'm not totally sure how much amethyst is worth and I seem to be hearing mixed things about the value of them.

Here it is
**edited by moderator, please upload photos to forum directly**

I think it is approximately 13 Carats, it is quite large.

Thanks.