Photographer Tomas Rak took some really remarkable shots of so-called "aura crystals," popular among new-agey types and collectors of rocks and minerals.
What is a titanium aura crystal, you ask? Take a nice piece of regular quartz and add a layer of titanium using a little magnetron ionization, and you get a lovely titanium aura crystal.
Tom also makes lovely friendship bracelets:
Image: YouTube / Empatheo