IME, if the rock or powder is hard and when you chop it up it sounds "crunchy" that's the re-rocked stuff. There's probably coke in it, but it's mixed with cut.

I may be totally wrong in my method, but I usually can pick through the rocks (after crushing it) and find the ones that are yey and the ones that are cut. If I crush it and

- it's sort of mooshes down (i.e. pieces don't go flying everywhere when you crush down with a card)

- feels kind soft and sticky

- when you chop it, it seems difficult to get into a finer powder, i.e. kinda sticky

- and you don't have to "chop" it (using up and down motion) and you can "slice" it (back and forth) it should be mostly blow and not cut.

Every time I have sorted through the rocks like that, I can usually separate the blow from the cut. If it's just the powder, after so many times doing it, I can just tell the cut from the coke. It's hard to explain what it looks like visually, but if you examine the powder you can usually see the difference in texture, color, etc.

If you aren't sure about little rocks, a method of testing whether it's coke or cut is to put it under your tongue and if it dissolves instantly, it should be coke, if it doesn't, it's cut.

As for the quality, imo it's hard to tell by looking, I judge by how I feel after doing it.

Hejsa,
Jeg købte 10g kokain i dag og det var i én stor klump, og utroligt hårdt. Meget svært at få hakket godt.

Er det ikke et tegn på, at det ikke før har været cuttet? Det virker utroligt godt bedøvende og tror det første gang jeg har fået så god vare. Hvad mener i?

Er det ikke godt hvis det er i "KLUMP"?

NoFuckingDeal

Det handler ikke om hvorvidt din ven prøver at snyde dig eller ej. Hvis han simpelthen ikke har god kokain -hvad de fleste ikke har - ja, så kan han ikke give dig bedre.

Gartersvinet

Kokain har altså vret brugt (bliver stadig?) til lokaldøvelse i øjenkirurgi - så god kokain BØR bedøve. Men du har helt ret i at en bedøvende effekt ikke er garanti for noget som helst.