What does cocaine look like?

Cocaine turns up as hard shiny flakes, as chalky chunks, and as a fine powder that ranges from bright white to faintly yellow or pink. All of those can be strong, all of them can be mostly cut, and the version most people meet has been through several hands that each changed how it looks.

The forms it comes in

The table below lists the shapes cocaine turns up in and what each one actually indicates, which is usually something about processing rather than about quality.

Forms of cocaine, and what each one does and does not indicate

Form	What it looks like	What it tells you
Flake or shard	Hard, glassy, breaks with a sharp edge	Pressed and broken from a block, nothing more
Chunk or rock	Chalky, crumbles under pressure	Often recompressed powder, sometimes crack
Fine powder	Loose, sometimes clumping	The most worked form, and the easiest to cut

Colour

White is the expectation and off-white is the norm. A yellow tint can come from residual solvent, a pink or beige one usually from a cut or a dye. None of that is a purity scale. Bright white powder can be half phenacetin, which is white, and a dull yellowish flake can be strong.

Texture and shine

The shine people look for is real but it is a physical property, not a chemical one. Cocaine compresses into a glassy solid, so a hard flake with a reflective break does tell you the material was compressed rather than whipped up from powder. It does not tell you what was compressed. Benzocaine and other caines recrystallise into bright shiny flakes of their own, which is exactly why they are used.

What looks the same

Levamisole, phenacetin, benzocaine, lidocaine, procaine and caffeine are all white or near white at the amounts involved, and several of them are chosen because they mimic the appearance or the numbing. A sample can be almost entirely cut and still look correct.

What the look does tell you

Appearance does carry a little real information. Visible colour separation, damp clumping or a strong chemical smell are all worth noticing. So is an oily film, which suggests poor drying. These tell you something was done badly, not what the sample is.

Where looking stops

Nothing above identifies a substance. Appearance cannot tell you which molecule you have, it cannot tell you how much of it is there, and it cannot see the cuts, because the things added to cocaine are chosen partly for looking like it. Two samples that look identical can be different substances at different strengths.

That is not a reason to give up on knowing. It is the reason chemistry exists, and the steps are quick. A reagent answers what the substance is. A testing card separates the sample and shows what else is in there along with a rough percentage. A laboratory analysis gives you an exact figure when the answer has to be exact.

For identity and cuts on your own sample, the first link below. The second puts a number on it. The third is the full laboratory analysis for when an estimate is not enough.

Cocaine harm reduction guide · Which test do you need? · What a testing card does

Questions?

Does shiny flake mean pure cocaine?

No. It means the material was compressed and broke cleanly. Benzocaine and other caines form shiny flakes too, which is part of why they are added.

Does the numbing test work?

It tells you a local anaesthetic is present. Cocaine is one, and so are lidocaine, benzocaine and procaine, which are cheaper and numb harder.

Is pinkish cocaine bad?

It usually means a dye or a cut rather than damage. Colour on its own does not rank quality.

Can I tell crack from powder by eye?

Usually yes, since crack sets into a hard off-white rock rather than a powder. What you cannot see is what came across with it.