Nadia of Nadia: The Secret of Blue Water
Note: This Nendoroid has a unique skin tone that is very orange. There are no other Nendoroids that will match with it perfectly. The closest would be skin-4a but this Nendoroid's skin is darker in color.
The blue jewel on Nadia's necklace can light up if a Milight 316B (sold by Hiromi Industrial) is inserted through a special hole in her waist joint. This light was NOT included with purchase of the Nendoroid. You can find more info about it at http://hiromisangyo.co.jp/ .These tiny lights are designed to be used inside fishing lures so don't be startled by all the fishing pics on the site. You can specifically find the recommended blue one (316B) on this page http://hiromisangyo.co.jp/?page_id=30