The Third Eye Chakra (Ajna): What the Texts Say, and What Was Added Later

Written and reviewed by The Kriya Yogi · Updated 27 September 2026

"Third eye chakra" content online is a blend of a genuine classical cakra — ajna — with a century of additions: colour charts, crystal prescriptions, gland identifications, personality typing. The classical core is worth knowing precisely, because it is more interesting than the additions. Here is ajna as the texts describe it, and a clear line between that and what came later.

The short answers

Ajna is the brow cakra in the tantric subtle-body maps — the sixth cakra in the standard seven-cakra system, located at or near the space between the eyebrows.
The name is traditionally linked to 'command' or 'perception' — the point where the guru's instruction is received and where inner vision is said to turn.
Classical descriptions give it two petals and associate it with the mind (manas) and with the syllable OM — not with the colour indigo, amethyst, or the pineal gland.
The seven-colour rainbow scheme, crystal correspondences and gland mappings are twentieth-century additions, not classical teaching.
In the kriya lineages, the brow centre (kutastha/trikuti) is the key station of attention in practice — within an initiatory framework.
Working with ajna classically means meditation on the brow point — not buying objects, though the objects are harmless if you enjoy them.

Ajna in the classical maps

The cakra system belongs to the tantric subtle-body tradition: a map of centres (cakras) along a central channel (sushumna), used in meditation and ritual visualisation. In the standard seven-cakra version of that map, ajna sits at the brow — the sixth station, between the throat cakra (vishuddha) and the crown (sahasrara).

The classical descriptions are spare. The Sat-cakra-nirupana, the influential sixteenth-century account translated in Arthur Avalon's The Serpent Power, gives ajna two petals, associates it with the mind (manas), places the syllable OM there, and describes it as the point where the three subtle channels — ida, pingala and sushumna — meet (the trikuti, the 'three-peaked' junction). The name is traditionally connected to the root meaning 'command' or 'perceive': the cakra where the guru's command is received, and where the practitioner is said to gain inner sight.

That is the classical content. Notice what it does not contain: no colour assignment in the modern rainbow sense, no crystals, no glands, no personality profiles.

What the twentieth century added

The familiar modern package — ajna as indigo, ruled by amethyst and lapis lazuli, governing the pineal gland, intuition and 'psychic ability' — was assembled by Theosophical and New Age writers in the nineteenth and twentieth centuries. Christopher Hills's 1977 book Nuclear Evolution is usually credited with fixing the rainbow colour scheme; the gland mapping is the esoteric identification this whole cluster examines. None of it appears in the Sanskrit sources.

This does not make the modern system wicked — it makes it modern. If an amethyst on your altar helps you sit down to meditate, it has done its job. Just know that you are holding a 1970s correspondence, not an ancient prescription.

Ajna in living practice

In the kriya yoga lineages, the brow centre — called the kutastha or trikuti region — is the key station where attention is placed as breath and awareness move through the spine. It is taught as the doorway between ordinary body-consciousness and the interior states the practice aims at — within an initiatory framework, not as a self-taught technique. See kriya yoga and the pineal gland.

For non-initiates, the honest way to 'work with ajna' is the gentle brow-point meditation on third eye meditation, and the classical context on ajna chakra and bhrumadhya in the texts. For the wider map, the 114 chakras guide and the individual cakra pages under it place ajna in the full system.

The pineal mapping, one more time

Because this page will be found by people told ajna is the pineal gland: the classical sources do not say this, could not have said it, and the identification is a twentieth-century esoteric move. The full untangling is at the pineal gland and the third eye.

In practice

Learn the classical description first
Two petals, the syllable OM, the meeting of the three channels, the seat of the guru's command. That is the textual core.
Separate the modern layer
Indigo, amethyst, pineal gland, personality types — twentieth-century additions. Enjoy them if useful; don't mistake them for the tradition.
Work with the point, not the concept
Gentle brow-point meditation is the classical way ajna is actually engaged.
Place ajna in the full map
It is one station in a system. The 114-chakras guide and cakra pages give the whole picture.
Respect the initiatory boundary
The kriya lineages' brow-centre practices are transmitted by teachers. Description is not transmission.

Cautions worth reading

This page describes physiology and traditional practice, not medical advice or treatment. If you have an eye condition, a seizure disorder, a psychiatric condition, or you are managing sleep through a doctor, talk to that clinician before changing your routine, light exposure or meditation practice.
Crystal and colour correspondences are modern tradition, not medicine — enjoyable as symbols, not a basis for health decisions.

Where the evidence stands

The classical description of ajna comes from the tantric cakra literature, principally the Sat-cakra-nirupana as translated in Avalon's *The Serpent Power*. The colour, crystal and gland correspondences are documented twentieth-century additions (the rainbow scheme is usually traced to Christopher Hills, 1977). The historical separation between these layers is well established in the modern scholarship of yoga.

Questions people ask

+ What is the third eye chakra?

Ajna — the brow cakra in the tantric subtle-body maps, the sixth of the standard seven. Classically it has two petals, carries the syllable OM, and is the meeting point of the three main subtle channels, associated with mind and inner perception.

+ Where is the third eye chakra located?

In the subtle-body maps, at or near the space between the eyebrows — the bhrumadhya region. It is a point in a contemplative map, not a physical structure a scan would find.

+ What colour is the third eye chakra?

Modern systems say indigo, but that assignment is twentieth-century. The classical Sanskrit descriptions do not give ajna a rainbow colour; the colour scheme was standardised by modern esoteric writers.

+ Is the third eye chakra the pineal gland?

No — not according to the classical sources. Ajna is a point in a contemplative map; the pineal gland is an endocrine organ. The identification is a modern esoteric idea.

+ How do you open the third eye chakra?

Classically, through meditation — attention rested at the brow point within a steady daily practice, on a foundation of ethical discipline. Not through crystals, oils or supplements, however pleasant those may be.

+ What blocks the third eye chakra?

The classical answer is a restless, untrained mind — not a physical blockage, a toxin, or a calcified gland. The remedy the tradition prescribes is practice, not products.

Sources

James Mallinson & Mark Singleton, *Roots of Yoga* (Penguin Classics, 2017) — the classical sources on cakras, bindu, bhrumadhya and the subtle body, in translation with commentary.
*Hatha Yoga Pradipika* (Svatmarama), chapter 2 (shambhavi and related mudras) and chapter 4 (dhyana and the gazing points). Sanskrit with translation: Brian Dana Akers, YogaVidya.com.
Mark Singleton, *Yoga Body: The Origins of Modern Posture Practice* (Oxford, 2010) — on how twentieth-century and esoteric movements reshaped chakra teaching.
R.J. Reiter et al., review literature on pineal physiology and melatonin, National Center for Biotechnology Information (NCBI/NIH), ncbi.nlm.nih.gov.
*Sat-cakra-nirupana*, as translated in Arthur Avalon (Sir John Woodroffe), *The Serpent Power* — the influential classical account of ajna and the cakra system.
Christopher Hills, *Nuclear Evolution* (1977) — cited as the modern source of the rainbow cakra colour scheme, to mark what is modern.

Educational content, not medical advice. Check with a doctor before starting new practices if you have a health condition or are pregnant.