signsThe crosscrux
also: Latin cross · Greek cross · tau cross · saltire · crux ansata · Coptic cross · Agadez cross
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Two lines crossing, usually at right angles. The variations are named and they matter: the †-shaped crux immissa, the T-shaped crux commissa or tau, the X-shaped crux decussata or saltire, the crux ansata with a loop on top. Worn as a pendant, tattooed at the wrist, woven from rushes, cast in Saharan silver, hung over a door.
citedWhen
as a Christian sign, 2nd century CE to now; as a mark, far older still carried cited
| Period | Upper Palaeolithic as a mark; from the 2nd century CE as a Christian emblem |
|---|---|
| How the date is known | art-historical — dated by style |
| Note | from_year dates the Christian emblem, which is the dated use. Cross-shaped incisions from the Upper Palaeolithic are noted in the source without years, so they are described in the prose and not used for the timeline. |
Years are stored astronomically — 1 CE is 1, 1 BCE is 0, 500 BCE is −499 — and printed the way a reader says them. How these dates are made.
The thing itself
| Form | Pendant |
|---|---|
| Made of | Silver · Gold · Wood · Thread and cord · Copper and bronze |
| Goes | At the neck · In the skin · On the roof · On a wall · At the door |
| Made by | for the Agadez type, Tuareg blacksmiths working in lost-wax silver; for Brigid's crosses, whoever weaves them on the feast day |
What its carriers say it stops
Reported, attributed, not tested here. Each row below is somebody's claim, with their name on it.
- Harm to a house or a field citedsaid by Irish practice: a Brigid's cross hung from the rafters for the saint's blessing and protection through the year
- Bad luck, unspecified citedsaid by Tuareg users of the tanaghilt, some of whom describe it as a grigri or a reserve of wealth
- Danger on a journey citedsaid by Dieterlen and Ligers, recording a father's words on giving the cross to a son leaving to live as a nomad
My son, I give you the four directions of the world, because we do not know where you will go to die
The story
Two intersecting lines are the cheapest mark a hand can make, so the shape has no single origin. Cross-shaped incisions appear from deep prehistory, as petroglyphs in European cult caves from the beginning of the Upper Palaeolithic and right through to the Iron Age. The cross mark also turns up as a number independently — Roman X for ten, Chinese rod numeral 十 for ten, the Brahmi numeral that becomes 4 — and in the Phoenician alphabet it is taw, whose name means mark.
The Christian cross is a later, dated adoption of an existing shape. It came into use as an emblem of Christianity from the second century CE, in the Latin letter T form, after Ichthys. Clement of Alexandria in the early third century calls it the Lord's sign. Tertullian, writing De Corona in 204, says it was already a tradition for Christians to trace the sign repeatedly on their foreheads — a cross made of a gesture before it is made of metal. Crosses with intersecting beams appear in Christian art towards the end of Late Antiquity; the patriarchal cross first appears in the tenth century; heraldry multiplies the forms from the Crusades onward.
What gets hung on a neck varies by church and by craft. The Coptic cross is two bold equal bars, each ending in three points for the Trinity, twelve points in all for the Apostles, often with a circle at the centre for God's love; the trefoil form developed locally from the short Greek cross. Many Copts have a cross tattooed on the inside of the right wrist as a sign of faith. In Ireland the cross is woven: the National Museum of Ireland sorts Brigid's crosses into seven categories by build rather than by outline, including a bent-armed type and a wheel type.
The Tuareg Agadez cross is the case that resists the word. Only a few tanaghilt actually resemble a cross; most are pendants with a varied silhouette, cast by blacksmiths in silver by lost-wax and never hammered. Asked what it means, users generally give vague answers; some call it a grigri or a reserve of wealth. The ethnologists Germaine Dieterlen and Ziedonis Ligers recorded a father giving the jewel to his son at the age of virility, marriage and nomadism with the words: my son, I give you the four directions of the world, because we do not know where you will go to die.
Inference — filing all of these under one sign is a convenience of shape, not a claim of common descent, and the Agadez piece is here mainly to show where the convenience breaks.
What this is near
What names this one
Each in its own words, from its own page.
Where this came from
- Cross — Wikipedia read 2026-09-16
- Coptic cross — Wikipedia read 2026-09-16
- Brigid's cross — Wikipedia read 2026-09-16
- Agadez Cross — Wikipedia read 2026-09-16
- Ankh — Wikipedia read 2026-09-16
- Copts — Wikipedia read 2026-09-16
Elsewhere
Record updated 2026-09-16. This record as JSON. Every field carries its own provenance; the tier chips above say which.