I don't know of the specific unicode symbol that represents what you are talking about, but there are several options:
- You could use a tool such as http://people.w3.org/rishida/scripts/uniview/ and try to find the character by using the "Show Range" filter on the top right. Then click the button immediately to its right. There are a lot of categories, and even more characters per category, so it might take a while.
- If you have ever seen this character used, you should be able to highlight it and copy and paste it wherever you like.
Here's another site that lets you browse the Unicode chars by category: http://www.unicode.org/charts/index.html. However, this uses PDF, so it might take even more time to find what you want.
Correct me if I'm wrong, but doesn't Unicode allow you to combine characters to form a unified one? Couldn't you find the two parts of what looks like a ribbon and combine them to form a single character?
Update: The closest Unicode chars I found are: ɣ, ɤ