Still Meh. In the course of looking for inspiration ....
**Note - these are culled from the web. Not my images. Reuse at your peril.
A Plume Agate, similar to Moss Agate with the dendritic inclusions.
As above.
Moss Agate. Resembles a fossil, but the plant-like structures are caused by minerals forming dendrites within the agate (or crystal).
Dendrites forming a rather perfect landscape...
Fire Agate, so named because it has a certain refraction that resembles fire, or the flickering play of color within an opal...
The above resembles "Detroit Agate" or "Fordite" - agate-like nodules formed from the drips of paint left behind by the automakers.
Agate is abundant in BC and Alberta, notable occurrences occur in the Hand-Hills, AB, although with a good eye it can be picked up from almost any field in Alberta. Agate is of interest not just because it's pretty (although that should be enough) - but also because the same conditions that generally create Agate often create Opal (opal occurrences are frequently near good agate hunting localities.).
Related: Enhydro