I started playing around with my picture of my Rose Quartz by changing the saturation and hue of the photo. Here were my results:

Original Photo:

Green:

Purple:

Red:

White:

Yellow:

Note: all I have changed in all the photos is the Hue and saturation. I think the red one is slightly over saturated but it was the only way to make it work. Also, it is a bit rough around the edges because I was going for that sort of look. Now I just need to figure out what to do from here.