Dark Crystal Shard

"The Crystal calls..."

I've been wanting one of these since I first saw the movie, way back when on video. I used one of the crystals here for a starting point: http://www.thingiverse.com/thing:142873 and was able to isolate and stretch it to get something approximating the shard from the movie: http://vignette3.wikia.nocookie.net/muppet/images/1/19/TheDarkCrystal-ShardGlow.jpg/revision/latest?cb=20150806203553
While not fully accurate, I think it’s enough of a placeholder that im not sure