Here is one very beautiful, 100% Natural Montana Missouri River Sapphire.

As with most natural untreated Montana Missouri River sapphire, this is a color changer.

In indoor lighting, in low light the sapphire can look silvery, but once light hits it, this amazing sapphire looks a mint green with a hint of yellow depending on the lighting type.

In the sunlight, if you can see past it's brilliance, it is a beautiful pale green but does easily pick up the blue from the sky making it blue to teal in color.

This sapphire was precision cut, it really brings great life to the stone.

The sapphire is very clean, even using a 10X loupe, I cannot see any internal flaws!

An absolutely amazing sapphire from this locale.