Carbuncle (Carbunclo)

Region/Culture: South America (Argentina, Chile, Paraguay)
Mythos: South American Mythology, Chilote Mythology, Guarani Mythology
Primary Type/Nature: Fairy Folk and Spirit Beings
Mythical Attributes: A small nocturnal animal that carries a glowing gem like a live coal on its head and conceals a fortune within its body.
Role in Mythos: It is the elusive guardian and living embodiment of buried wealth, sought by miners and prospectors who believe its stone grants limitless fortune.
Relation to Humans: Humans hunt the carbuncle relentlessly for the jewel it carries, certain that whoever seizes it will never want for anything again. None has ever caught one, because at the faintest sound it snaps shut and disguises itself as an ordinary stone.

A light moves on the hillside after dark, low to the ground, bluish-white and steady, and anyone watching from a distance knows at once that it is not a campfire. Fires flicker and smell of smoke. This thing glides. It crosses the slope like a coal that has learned to walk, and on its head sits something brighter still, a small red gleam like a chip of burning ember set into bone. Men have followed that light for four hundred years. None of them has come back holding it.

The creature is the carbunclo, and its name is a confession of how little anyone knows. Carbunculus is Latin for “little coal,” the same word old jewelers used for the garnet and the ruby, and that is mostly all anyone has ever seen of the animal: the stone, glowing, and the dark shape carrying it. Whether that shape wore fur or feathers, walked on four legs or more, swam or scuttled, no two witnesses agreed. Some called it a small luminous dog. Some swore it was a kind of shellfish that shone. Others described a cat with a glittering chin, or nothing more than a drifting greenish-red fire, the color of a firefly that had grown ambitious.

The fullest accounts give it a body larger than a mouse and closer to a cat, segmented like a short ear of corn, the light burning somewhere inside and leaking out through the seams between the segments. Over this sits a shell in two halves, hinged like a mussel and shaped, when shut, exactly like an ordinary rock. A priest who wrote of it in 1791 said the lid was covered in fine plumage and the breast marked with beautiful spots. A man who watched one from a single meter away in 1879 counted more than four legs and could say little else, because the instant it sensed him it folded its shell closed and the light went out, and there was only a stone on the dark ground where a wonder had been a breath before. That is the whole defense of the carbunclo. It does not bite. It does not flee uphill into the rocks, though it can leap and run when it wants to. It simply stops being visible, and becomes the most common thing in the world.

It belongs to the southern end of the continent, to Argentina and Chile and the rivers of Paraguay, and the stories shift from one country to the next. In Chiloé, the cold green islands off the Chilean coast, the carbuncle is a guardian of metals, a cat-sized, four-footed thing with a glowing beard hanging from its chin, crouched over buried veins of silver and gold. To the Guaraní it was Añagpitán, which a Spanish chaplain translated, with some feeling, as the devil that shines like fire. Everywhere it is the same promise in different dress: somewhere inside the animal, or fixed to its skull, is a jewel, and the jewel is wealth without limit. Whoever takes it never wants for anything again.

That promise put Spaniards into the swamps. Martín del Barco Centenera, a churchman who came with the conquest, spent miserable seasons beating through Paraguayan jungle and along its rivers after the creature and never once laid eyes on the stone, though he wrote afterward that the man who got it would be assured of joy and fortune for life. Gonzalo Fernández de Oviedo, cataloguing the marvels of the Indies, compared the light on its head to two strange fires sailors had reported in the Strait of Magellan, and remembered an older European tale of a gem hidden in the brain of a dragon. The conquistadors had crossed an ocean and found, waiting for them, a version of a story they already knew.

The carbuncle keeps moving regardless. In the drought of 1925, people near the hill of Tulahuén watched a string of flashing lights come down the slope in the night and cross toward the valley of the Rio Grande, and they read it plainly: a family of carbunclos, driven out of their hiding places by thirst, going down to the river for water. The lights passed. No one went after them. By then everyone understood how that ended.

Its gifts are real enough on paper. The light it throws can be seen from a league off and tells smoke from sorcery at a glance. Its hearing is so fine that a single snapped twig is enough to shut it down to a pebble. It carries, by every account, a fortune on its head or in its belly, the most valuable object in the folklore of the whole region, walking freely around for anyone quick enough to take it.

And no one is quick enough. The carbuncle’s whole power is also its limit. The shell that hides it also blinds and silences it; the light that makes it worth hunting is the thing that gives it away in the dark. It cannot defend its treasure except by pretending it has none, and the pretense only holds because the animal is willing to sit perfectly still and be mistaken for the ground. Strip away the glow and the gem and what remains is a small, shy, nocturnal creature that wants water and quiet and to be left alone. The miners kept coming anyway. They are probably still out there, turning over stones.

Frequently Asked Questions

What is the Carbuncle?

The Carbuncle, or carbunclo, is a small glowing animal from the folklore of Argentina, Chile, and Paraguay that carries a red, gem-like mirror on its head and is believed to hold great riches within its body. Its name comes from the Latin carbunculus, meaning “little coal,” a word also used for the garnet and ruby. No one has ever observed it clearly enough to say whether it is a mammal, a bird, or something else entirely.

Why is the Carbuncle hunted?

The Carbuncle is hunted because the glowing jewel it carries is said to bring limitless wealth and good fortune to whoever obtains it. Miners and prospectors in southern South America have pursued it for centuries, and in Chiloé it is regarded as a guardian of buried metals. Despite all this effort, no one is recorded as ever having caught one.

What does the Carbuncle look like?

Descriptions of the Carbuncle vary widely, but the most detailed accounts give it a cat-sized body segmented like a small ear of corn, with light shining out through the gaps between its segments and a two-part shell that closes to resemble an ordinary rock. A red, mirror-bright gem sits on its head, and in the Chiloé version it has four legs and a glowing beard on its chin. Some witnesses instead reported a luminous dog, a shining shellfish, or merely a moving greenish-red light.

Where does the Carbuncle live?

The Carbuncle is found across the southern part of South America, particularly in Argentina, Chile, and Paraguay, where it moves about at night like a giant glow-worm in search of food and water. In the islands of Chiloé it is said to crouch over buried veins of silver and gold. During the 1925 drought, lights seen descending the hill of Tulahuén toward the Rio Grande were taken to be a family of carbunclos seeking water.

How does the Carbuncle protect itself?

The Carbuncle protects itself through camouflage and acute hearing rather than force. At the slightest sound it clamps its bivalved shell shut, which extinguishes its light and makes it look exactly like a common stone. This stillness, combined with its keen senses and remote habitat, is the reason it has never been captured.