I like very large stones and would prefer to purchase on the internet… but can't seem to find any good websites or get any information as to where I could buy anything that I really like.

Answer:
Try QVC . They’ve really nice jewelery . And for reasonable prices to .

Here`s a link … http://www.qvc.com/qsearch/search.aspx?N…

Answer:
You didn't mention what are you exactly looking in turquoise jewelry anyways one can find really good turquoise jewelry on http://www.b2cjewels.com/