How to Make a Black Scrying Mirror (and Actually Use It)
How to build one properly from frame glass and matte black paint, how to set up the room and sit with it, and what the psychology of staring at a dim reflection actually predicts you will see.
A black scrying mirror is a piece of glass painted matte black on one side, used as a dark reflective surface to gaze into. This guide covers how to make one properly, how to sit with it, and what the psychology of staring at a dim reflection actually predicts will happen — which is more interesting, and stranger, than the usual claims.
Contents
To make a black scrying mirror, take the glass out of a picture frame, clean both faces, and spray the back with five or six thin coats of matte black paint until no light passes through. Put the glass back with the unpainted side facing out, so you are looking at glossy glass over black rather than at paint. Use it in low light, with the light source behind you and nothing bright reflected in it, for fifteen to twenty minutes at a time. You will see things — that part is close to guaranteed, and it has a well-documented perceptual explanation.
The obsidian mirror associated with John Dee, now in the British Museum, has been geochemically sourced to Mexico, making it an Aztec object that reached Europe after the conquest.
Source/tradition: Stuart Campbell, Laura Torvinen & Elizabeth Healey, Antiquity 95 (2021); British Museum collection entry
Subjects gazing at their own reflection in dim light report the face distorting into unfamiliar, strange or archetypal faces, most of them within about a minute — the strange-face-in-the-mirror illusion.
Source/tradition: Giovanni B. Caputo, Strange-face-in-the-mirror illusion, Perception 39 (2010)
Uniform, unstructured sensory input reliably produces hallucinatory imagery in the majority of subjects within minutes under controlled conditions — the Ganzfeld effect.
Source/tradition: Wackermann, Pütz & Allefeld, Ganzfeld-induced hallucinatory experience, Cortex 44 (2008)
Steadily fixated, unchanging peripheral detail fades entirely from perception — Troxler fading, first described in 1804 — which is why a featureless dark field in dim light empties out visually.
Source/tradition: Ignaz Paul Vital Troxler (1804)
Scrying into a dark reflective surface — polished obsidian, still water, ink, a crystal sphere — is transmitted across many cultures as a receptive divinatory practice.
Source/tradition: Comparative folklore and history-of-magic literature
Consecrating a scrying mirror and keeping it covered between sessions is near-universal custom in the practitioner literature.
Source/tradition: Modern occult practice literature
Placing every light source behind the gazer, tilting the mirror away from your own reflection, setting a timer face down, and writing a plain description before any interpretation are what make sessions usable.
Source/tradition: Temple of Desire, editorial practice
That images seen in a scrying mirror originate outside the viewer, show future events, locate people or objects, or carry messages from the dead.
Source/tradition: No evidence; the imagery is the predicted output of a visual system deprived of stable input
VERIFIED = verifiable in scientific or official sources · TRADITIONAL = historically or culturally recorded · LIVED PRACTICE = widely practiced, experiential knowledge · NOT PROVEN = spiritual interpretation, not scientifically established.
Quick answer: To make a black scrying mirror, take the glass out of a picture frame, clean both faces, and spray the back with five or six thin coats of matte black paint until no light passes through. Put the glass back with the unpainted side facing out, so you are looking at glossy glass over black rather than at paint. Use it in low light, with the light source behind you and nothing bright reflected in it, for fifteen to twenty minutes at a time. You will see things — that part is close to guaranteed, and it has a well-documented perceptual explanation.
What a black mirror is, and what it is for
Scrying is gazing into a surface until images appear. The surface varies by tradition and hardly matters: still water, a bowl of ink, polished obsidian, a crystal sphere, a fingernail coated in oil. What every version has in common is a dark, featureless, mildly reflective field — something with no detail for the eye to hold on to.
A black mirror is the cheap, modern, extremely effective version of that. Glass over matte black gives you a surface with just enough reflection to be alive and not enough content to be a mirror in the ordinary sense. You can see that something is there. You cannot quite see what.
The best-known example in the English-speaking world is the obsidian mirror associated with the Elizabethan scholar John Dee, now in the British Museum. It is worth knowing what recent analysis established about it: the obsidian was sourced to Mexico, making it an Aztec object that travelled to Europe after the conquest. Dee's famous instrument of angelic communication is a piece of Mesoamerican material culture that arrived in England through plunder — a useful corrective to the way it usually gets described.
What you will actually see — and why
Most guides put this at the end, hedged, or leave it out. It belongs at the front, because knowing it makes the practice better rather than spoiling it.
Stare at a dim, low-contrast reflective surface for a few minutes and your visual system starts producing content. This is not a claim about suggestible people. It is one of the more reliable findings in perceptual psychology, and it comes from three directions at once.
Troxler fading. Described in 1804: hold your gaze steady and unchanging peripheral detail fades out of perception entirely. Your visual system is built to report change, and it stops reporting what does not change. In a dim room, with a featureless dark surface, a great deal of the visual field simply goes.
The Ganzfeld effect. Given uniform, unstructured sensory input, the majority of people begin to experience hallucinatory imagery within minutes — shapes, movement, faces, sometimes full scenes. It has been produced under controlled laboratory conditions repeatedly. A black mirror in low light is an improvised Ganzfeld.
The strange-face-in-the-mirror illusion. The most striking of the three. In 2010 Giovanni Caputo had subjects sit in front of an ordinary mirror in dim light for ten minutes. Within about a minute, the overwhelming majority reported their reflection changing: distortions of their own face, the faces of relatives or strangers, animal faces, archetypal figures. Not a fringe result and not a rare one — a normal response of the face-processing system when it is fed a steady, badly lit face.
So: you will see faces. You will see movement at the edges. Clouds may appear to roll across the glass. All of this is the expected output of the setup, and none of it requires anything to be present in the room.
That does not make scrying pointless, and here is the honest case for it. You are using a well-understood perceptual mechanism to generate imagery that did not come from your deliberate, verbal, controlling mind. What you make of that imagery afterwards is yours. It is closer to a dream practice or to active imagination than to a telephone line — and treated that way it is genuinely productive. Treated as a telephone line it produces confident nonsense.
How to make a black scrying mirror
Twenty minutes of work and a day of drying. Do the painting outdoors or with the windows open, and wear gloves.
- Get a framed picture with plain glass. A charity shop or thrift store frame is ideal. Round or oval is traditional; rectangular works and no one will mind. 15–25 cm across is the useful size — large enough to fill your field of view at arm's length, small enough to store covered.
- Take the glass out and check the edges. Cut glass from old frames can be sharp. If it is chipped or cracked, get another frame — you will be handling this in the dark.
- Clean both faces properly. Glass cleaner or a vinegar-and-water mix, then a lint-free cloth. Every speck you leave under the paint becomes a permanent feature of the mirror.
- Spray the back face with matte black. Matte, not gloss — gloss paint under glass produces a muddy double reflection. Hold the can 25–30 cm away and move it steadily side to side. Thin coats.
- Build up five or six coats, letting each dry. Test by holding it up to a lamp: when no light comes through, you are done. Fewer coats gives you a brownish, translucent surface that never quite goes dark.
- Let it cure fully — overnight at minimum. Paint that is dry to the touch is not cured, and reassembling early leaves fingerprints in it permanently.
- Reassemble with the unpainted side facing out. This is the step people get wrong. You want to look through clean glass at the black behind it, not at a painted surface. Painted-side-out gives you a flat, dead, chalky rectangle.
- Cover it. A dark cloth, a bag, face-down in a drawer. Partly tradition, mostly practical: an uncovered black mirror collects dust and every scratch is forever.
Two variants worth knowing. Black paper behind the glass works and is reversible, though it is slightly less deep. Black ink or dark water in a shallow bowl is the oldest form of all, needs no construction at all, and is arguably better for a first attempt — if you find you do not enjoy scrying, you have spent nothing.
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If you want to work with this yourself, this is what we useSpiritual Clarity 7-Day Candle — Focus & Divination — $13.95 A blue seven-day glass candle, hand-dressed in small batches with a clarity herbal blend and topped with a clear quartz point. It is built for the settling phase rather than for the working — and settling is most of what makes a scrying session go well or badly. Two honest notes: the candle goes behind you or off to one side, never where it reflects in the glass, and a seven-day candle burns unattended for a long time, so it needs a non-flammable surface with clearance on every side. |
If you would rather browse than build, the ritual candles shelf covers the light side of this and tarot, books & divination covers the rest.
Setting up the room
The room does more work than the mirror. Almost every “my scrying mirror doesn't work” problem is a lighting problem.
| Condition | Aim for | If it is wrong |
|---|---|---|
| Light level | Dim, one small source | Too bright and it is just a mirror. Fully dark and there is nothing to fade. |
| Light position | Behind or beside you | A flame in front reflects in the glass and your eye locks onto it. Nothing else will happen. |
| Mirror angle | Tilted so you do not see your own face | A clear reflection of your face pulls you into the strange-face illusion, which is vivid and often unsettling. |
| Distance | 40–60 cm, mirror filling your focus | Too far and the room competes; too close and you cannot hold a soft focus. |
| Behind the mirror | A plain dark wall or cloth | A patterned background reflects faintly and hands you shapes that are not yours. |
| Session length | 15–20 minutes | Under 5 and nothing has begun. Over 30 and most people are tired rather than deep. |
Temple Tip
Set a timer, face down, out of sight, before you start. Not because you need discipline — because the moment you begin wondering how long it has been, the session is over. Checking the time requires a focused glance somewhere bright, and that resets the whole perceptual state you spent ten minutes building. One timer at the start, and then no decisions until it sounds.
How to actually use it
Sit comfortably, at a table, with the mirror propped rather than held. Twenty minutes of holding something up is twenty minutes of noticing your arm.
Then: soften your focus rather than staring. The instruction that works for most people is to look through the glass, at a point a little behind it, the way you would with a stereogram. Hard staring makes your eyes water and produces afterimages you will misread. Blinking is allowed and does not ruin anything.
Ask one open question at the start, out loud if you like, and then let it go entirely. Holding a question in mind for twenty minutes is just thinking about the question with a mirror in front of you.
Expect the sequence most people get, roughly in this order: the surface goes cloudy or milky; the edges of your visual field dim and close in; movement appears, usually at the periphery; then forms — faces most often, because faces are what your visual system is most eager to build. Somewhere in there, if it is going well, something arrives that surprises you. That is the part worth writing down.
Write immediately afterwards, before interpreting. Describe, do not explain. “A pale shape opening on the left, twice” is a record. “My grandmother came through” is a conclusion, and if you write the conclusion you have lost the record forever. The same discipline applies to any receptive practice; we set it out in more detail in how to prepare for a reading.
Who should not do this
A short section, and a real one. This is a practice that deliberately destabilises normal perception, and for some people that is not a good idea.
If you have a history of psychosis, dissociation, depersonalisation, or an ongoing period of severe anxiety or sleep deprivation, sustained mirror gazing is a poor fit and can be genuinely distressing. The strange-face illusion is unsettling for people with no vulnerability at all; for someone already having trouble with the boundary between inner and outer, it is not a neutral experiment. There is nothing to prove here and nothing lost by choosing a different practice.
For everyone else, two ordinary limits: stop if you feel sick or panicky rather than pushing through, and do not do this instead of sleeping. The imagery gets more vivid when you are exhausted, which is not the same as it getting better.
And if what you are seeking from the mirror is contact with someone who has died, please read that intention honestly. Grief is not something a piece of painted glass can address, and a practice that produces convincing faces on demand is a difficult thing to hold while grieving. That is a conversation for a person, not a mirror.
Black mirror, crystal ball, or a bowl of water?
| Black mirror | Crystal sphere | Dark water or ink | |
|---|---|---|---|
| Cost | Almost nothing | The highest by far | Nothing |
| Ease of getting results | Highest — a large, even, dark field | Hardest — internal flaws and bright highlights catch the eye | High, but the surface moves |
| Main drawback | Scratches; shows every fingerprint | A clear sphere in sunlight is a fire risk — never leave one on a windowsill | Has to be set up and emptied each time |
| Best for | A regular practice you keep | People who want the object as much as the practice | Finding out whether you like scrying at all |
If you are assembling a broader receptive practice rather than one technique, the groundwork is the same across all of them — and it starts earlier than most people think, as we argued in how to open your third eye. For a method with a much shorter learning curve, how to use a pendulum is the usual next stop.
Quiz: which scrying surface should you start with?
Four questions. The result is a surface and a session length.
Voices from practice
We do not publish invented names, invented quotes or star ratings, so this describes what recurs rather than quoting individuals.
The most common report by a wide margin is the clouding: practitioners describe the surface appearing to fog or go milky before anything else happens, and beginners frequently mistake this for a fault in the mirror or in their eyes. It is neither, and it is usually the first sign the session is working.
The second is the face. People who have read nothing about the strange-face illusion routinely describe exactly what the research describes — a face that is theirs and then is not, that ages, that becomes a stranger — and they routinely describe it as the most disturbing part of the practice. Angling the mirror away from your own reflection is the practical fix, and knowing in advance that this is a documented perceptual effect is the psychological one.
The third, from people who keep records over months: the sessions that felt like failures at the time are frequently the ones with the most usable notes, and the sessions that felt profound are frequently the ones where the notes say nothing at all. This is one of the better arguments for writing everything down and judging none of it on the night.
What we don't promise
That anything you see in the mirror comes from outside you. The imagery a black mirror produces is the well-documented output of a visual system deprived of stable input, and everything in this article about faces, clouding and movement is predicted by that alone.
That scrying shows the future, locates objects or people, or delivers messages from the dead. It does not, and we would treat anyone promising otherwise with real caution.
That it works for everyone. Some people sit for twenty minutes and get nothing, repeatedly. That is a normal variation in how strongly the effect presents and not a spiritual verdict on anybody.
And nothing here is medical or psychological advice. If you live with psychosis, dissociation or severe anxiety, this is a practice to skip rather than to adapt, and if a session leaves you shaken in a way that does not settle, that is worth raising with a professional rather than with a forum.
Practically: how to work with this
Build it in one evening, and then do not use it that night. Let the paint cure, and let the object stop being a craft project before it becomes a practice.
For the first month, keep it mechanical: same time, same chair, same light, fifteen minutes, timer face down, three lines written afterwards describing only what you saw. Consistency is what produces a usable record, and the record is what makes the second month interesting.
Then read back. Not for accuracy about events — that is the wrong question — but for what keeps returning. The images that show up in six sessions out of ten are telling you something about yourself, and that is what this practice is genuinely good for.
Frequently asked questions
Which side of the glass do you paint?
Paint the back and look at the front. The unpainted glass faces out, so you are looking through a clean glossy surface at the black behind it. Reassembling it painted-side-out is the single most common mistake and gives you a flat, chalky panel with no depth.
Do you have to use an actual mirror?
No — plain picture-frame glass is better. A silvered mirror painted black still carries the silvering underneath and gives you a doubled, muddier surface. Clear glass over matte black is cleaner and cheaper.
Why does my scrying mirror not work?
Almost always the light. If a lamp, screen or flame is reflected in the glass, your eye locks onto that bright point and the fading effect the practice depends on never begins. Put every light source behind you, dim the room, and try again before changing anything else.
Is scrying dangerous?
For most people, no — but it deliberately destabilises ordinary perception, and it can be genuinely distressing. If you have a history of psychosis, dissociation or depersonalisation, or you are in a period of severe anxiety or sleep deprivation, this is a practice to skip. For everyone else: stop if you feel sick or panicky, and do not do it instead of sleeping.
How long should a scrying session be?
Fifteen to twenty minutes. Under about five, the perceptual effects have not begun. Past thirty, most people are simply tired, and tired imagery is more vivid without being more useful. Set a timer face down so you are not tempted to check the time.
Do you need to consecrate or cleanse a scrying mirror?
Traditionally many practitioners do, and covering it when not in use is near-universal custom. Neither is necessary for the mirror to function — it is glass and paint. If a small dedication helps you take the practice seriously, that is a good enough reason to do it, and an honest one.
Sources & further reading
- Giovanni B. Caputo, “Strange-face-in-the-mirror illusion,” Perception 39 (2010) — subjects gazing at their reflection in dim light reported distorted, unfamiliar and archetypal faces, most within about a minute.
- Jiří Wackermann, Peter Pütz and Carsten Allefeld, “Ganzfeld-induced hallucinatory experience, its phenomenology and cerebral electrophysiology,” Cortex 44 (2008) — on imagery produced by uniform, unstructured sensory fields.
- Ignaz Paul Vital Troxler (1804), on the fading from awareness of steadily fixated peripheral stimuli — the original description of Troxler fading.
- Stuart Campbell, Laura Torvinen and Elizabeth Healey, on the geochemical sourcing of the obsidian mirror associated with John Dee, Antiquity 95 (2021) — establishing its Aztec Mexican origin.
- The British Museum, collection entry for the Mexican obsidian mirror associated with John Dee.