Okay,so, having had a look at your pictures, the "problem" there is that you've just got a really too well polished crystal, more than anything. It's okay, but it doesn't look that interesting. or natural.
One of my tried and tested go-tos to make a chunk of quartz look more interesting is frying a crystal, aka cracking it by thermal shock, as detailed in this thread from a while back:
Just how do you go about "cracking" a crystal, anyway? it produces plenty of nice internal cracks and fractures within the quartz that diffuse light very nicely.
Something I've found that works nicely is sanding the rear facing facets of your crystal down with some wet and dry sandpaper, and polishing the front facing facets. That way, when you light it, the front facets shine crystal clear, and the rear facets glow because they're diffused.
And if that fails, you can shape quartz by roughing it up with a dremmel-type tool and a diamond coated wheel.