Amber/lavender/silver = most probably completely made up by a troll/storyteller over at the shroomery. Read the thread, it's highly entertaining if fiction is your thing.
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Silver-L that is bonded on a silver conductor. You can't read everything on the internet and gain solid knowledge. Plus, there are different ways to get LSA...therefore creating many of the other names. Sure, the chemical may contain the same atoms, but the method those atoms were bound in each chemical process, inside and outside of the plant, down to what you can't see on your Wikipedia defined molecule graph(where all seem to become experts in the field of chemistry experience), will have some range of difference. Which goes on to explain a little of how running current through silver bonding lsa and diethylamide will create more undesirable feelings, no matter how many times you refine it, how long those very tubes are, or your altitude.
these things were not made up by the chinacat thread. within the dead and jam scene in the states people have been referring to those different brands of crystal for decades. i am not sure about the silver conductor thing but maybe that is the case. from what i understand this was a way of telling the difference between different "families" that produced the crys.
and whoever said "GDF" controls the LSD trade is wrong, they probably do the brunt of the retail work on the bottom though. there seems to be much more involved with the BEL in the higher up synthesis, smuggling, and distribution aspects. there are definitely multiple chemists associated with the dead scene and their product comes out there before anywhere else, but from what i understand they typically do smaller scale runs, but who knows with the popularity of the festival scene now. there is a difference between the "family", specific acid families, and the GDF. the latter is more of a typical retail drug distribution network. but who knows, no one really knows these things for sure except those who synth it. all i know is that these names dont necessarily have to do with the aesthetic appearance of the crystal, although i think white fluff started off that way.
the chinacat thread was referring to how things were done on dead tour back in the day when things were coming from the owsley/nick sand/tim scully organization (the family). GDF is not the same group although im sure they began to overlap before sand was busted. GDF has way more to do with hats, pins and silly kids on tour than thumbprints and owsley.