I have a question or two. SWIM had what they said was DMT in four levels of purity. The lowest purity was red/brown in color and somewhat "rocky", then orange/amber chunks, then a yellow crystal powder, and the highest was a white powder. SWIM gave me some of the white powder. I've had it since June and it's starting to yellow. First I was wondering if any of this sounds legit, and second, if the white powder I have is DMT, it is just oxidizing and will still give me an experience worth using.

The only way to be sure if what you have there is DMT is to extract it yourself. But from what you describe it does sound like the DMT is just oxidising a bit, hence the yellowness.

If it is DMT then its sill good to go.

https://www.dmt-nexus.me...aspx?g=posts&t=11715

That is why we strongly suggest you extract yourself. Even if it is DMT, who knows what chemicals it was extracted with? What if it has carcinogenic chemical traces? What if it has other nasty non-volatile chemicals in your product like rust inhibitors and what not? (not to mention what if its not even DMT but some more toxic substance?)

Extract your own and throw it away is my recommendation.

At the very very least, if you wont throw it away despite recommendations, I would say recrystallize, then redissolve in naphtha, wash with sodium carbonate, salt with FASA, wash fumarates with dry acetone, and do the water conversion to freebase as mentioned in BLAB. (and next time extract your own)