Fluorite inclusions in Quartz
Here is a quartz crystal with small little octohedrons of fluorite floating within the crystal. It is a rare specimen with only one locality, however, the crystal is heavily striated and very difficult to see within. You can see on the left how the octohedrons lie in the crystal, after my own close examination with a hand lens. This particular crystal I have photographed many times, and sadly I cannot capture the octohedrons very well. Sample is about an inch and a half long.