It is in Swim's area as well.
If it is flat, smooth, SQUARE shaped and see through.
It could quite possibly bee re-rocked with a product sold over the internet and at head shops nationwide.
Does "Sxpxr N" (aka crystallized vitamin B-3) Niacinamide sound familiar?
Gear cut or recrystalized with MSM has been the most common form seen on the streets for quite some time, so much to the point where rerock has become rare to non-existant (in Swim's area) but still very common in So Cal and Az.
Was very common 5 yrs ago.
Apparently it is starting to come back around.
It is generally a direct result of a slow recrystalization MA + B3. Or nuked together in a microwave, or steamed together in a doubled up ziplock in a vegetable steamer. UTFSE...
Pure recrystalized MA will have off-white striations running through it and is not "entirely" see through or clear. (I think Jacked used to have some pics posted in the archives)
Niacinamide gives it that transparency and did I fail to mention it is also 100% water soluble.
Take a melting point on the shit and report back.