Answer to star of india question

Thank you people who answered the question. The answer is 2 billion. Thank you for going on this site. Come back some time for fun facts! Kyle

New fun fact!!!!!!!!!!!!!!!!!!!!!!!

I went to the natural history museum today. One thing I learned was that the museum has a star of india saphire. Read the following answers and guess which one you think is correct. Tomorrow I will tell you the answer.

The star of india saphire was formed how many years ago?

200,000 years ago?,
2 million years ago?, or
2 billion years ago?