The necklace Anne Hathaway wears is Helen Ficalora. You can find pricing if you go to the website and then click on the ordering link. Then there is another link that gives you a document with the pricing.
The alphabet necklaces are $115 for yellow gold, but they all come in white and rose gold as well, which are $125. The chains start at $70 for the most basic in 16 inches in yellow, and go up from there. There are also a lot of cute add-ons, hearts, birth jewels, stars, flowers, for like anywhere from $80 to $165. I love these necklaces, so cute, and a great new trend.