Just tested for the first time some CBD Crystal from Alpha-Cat, at first I bought it in order to mix it with my reclaim+nic juice+terps+liquidizer to get a sort of european old school electronic Blunt (I vape that in my Veco tank).
Although I'm more inclined to use cbd crystals on the top of a flowers bowl, using a convection based vaporizer, or mixed with kief. Effects are definitively here, not a heady rush but more a calming, mellow relief and it doesn't carry any bad taste. Although I wouldn't use it alone, cause the taste, except if I was in a medical need but I will try to throw a spoon in a Evolve+ donut atty...
Got a nice session with the Quartz Quest and a load of rosin+cbd.