In context, Harry is asking about Sickles specifically, which are silver & not gold. So Griphook's reply is consistent with the Stone being able to do both silver & gold, as well as the classical Stone's exclusive gold*. If Harry had asked about coining a ton of Knuts or Galleons and Griphook had replied assuming silver, then that'd be strong evidence the Stone only did silver in the MoR-verse.
*I've done a bit, not that much, of reading about alchemy; I don't remember the philosopher's stone ever supposed to be able to do silver in addition to gold.
Update: This post has also been superseded - new comments belong in the latest thread.
The second thread has now also exceeded 500 comments, so after 42 chapters of MoR it's time for a new thread.
From the first thread: