Gemstone Identification: Possible Matches for Blue-Green Stones

Question

My Ring   I am sure that without seeing it in person you can not tell for sure what gem this is but could you by chance tell me what it may be?
We can not agree on whether it seems green, blue or blue-green.

Answer
Hi Tiffany,

The stone could be one of many gems that come in that color. The most common ones it could be are: Aquamarine, Tourmaline, sapphire, topaz and many more.  It seems to me like a lot of Blue/green sapphire s I've seen. That's my best guess. Thanks for asking.

Peter