So today was a sunny day in my neck of the woods I decided to load up the ole' GVG with about 10mg of spice on a bed of blue lotus and passion flower and go outside with magnifying glass in hand. I left the top off the GVG and under the noon day sun focused the light as small as possible directly on the spice it took about 20seconds to melt in and I kept inhaling and after about 1 minute of gradual heating my dose was delivered. 

If nothing else it was a fun way to deliver a dose and it felt very clean, and unusually energetic to me.

I recommend anyone with a magnifying glass try