Home › Magic Stones and Electric Gems › Magic Stones and Electric Gems: Pebble-mania

Magic Stones and Electric Gems: Pebble-mania

Pebble-mania or lithomania is an inherent trait in all mankind. From the most primitive man to the most modern, especially those of optimistic and investigating tendencies, this trait is present in a greater or lesser degree. That is, curious people would collect pebbles for their bright colors, or markings, for their transparency or translucence, and those of an investigating turn of mind, under the impression that the find was perhaps a diamond or a gem of some kind. In modern times this kind of collecting has developed into a regular industry, pebbles found on the shores of the United States and which are either pure white, transparent or translucent quartz, being cut and offered for sale. These pebbles are gathered, and are valuable to those who make a business of selling them, because the white opaque pebbles become translucent after cutting, or rather, during the process of cutting, and they are then passed off for moonstones, which are worth from one-third to one-half more than the cost of cutting the quartz pebbles, the purchaser being led to believe that he is getting a moonstone, although this could not be possible, since moonstones have never been found on either the eastern or the western coast of the United States. As for the cut moonstones which are brought back by the tourist, under the impression that he is getting native material and workmanship, these all come from Europe. Pebble-mania is not confined to mankind alone. Birds and animals possess it. The magpie picks up and hides away bright objects, including odd pebbles, or carries them to its nest. The stones known as aetites were said to be found in eagles' nests, although they may have been swallowed by the birds for digestive purposes, just as the hen's crop is full of stones, many of them being transparent, a proof that the fowl had been attracted by them, and had swallowed these in preference to other, duller ones. Notable instances of transparent pebbles are the alectorii, or "cock-stones." The great Italian goldsmith and sculptor, Benvenuto Cellini (1500--1574), relates that when a youth he often shot cranes with his arquebuse, and that in several instances he found in their entrails not only fine turquoises, but also fragments of the so-called plasma-emerald and even occasionally small pearls. This serves to indicate that the pretty exterior of such objects exerted an influence upon these birds in some degree analogous to the impressions aroused in mankind on viewing them.

In seventeenth century Denmark there seems to have been no lack of "magic stones," for it is related that one day as King Christian II was strolling along the beach, he picked up a shining pebble by the aid of which he could render himself invisible at will. Similar power was said to exist in stones that could be found in ant-hills if hot water were thrown onto them on St. Walpurgis Day, or St. Hans' Day. The Danes of the time also shared in the belief that the stone from the lapwing preserved from illness and sorrow as did the "swallow's-stone" as well.

It has frequently been maintained that the source of pebbles could be broadly determined by their form and surface; for example, well-rounded specimens of fairly uniform size would be classed as marine pebbles, while river-pebbles would be subangular and usually flat; pebbles of glacial origin, on the other hand, would have faceted, rounded edges, their surfaces being polished and striated. However, although these rules might hold good in many cases, careful observation has demonstrated that pebbles of all these supposedly distinct types can be found among those of marine, fluviatile, or lacustrine origin. This is explicable by the fact that while the constant, unhindered action of sea or river would probably produce pebbles of distinct type, the local conditions often interfere with this. For instance, on a low sea-coast, with weak wave-action, pebbles frequently became buried in the sands, thus retaining their form practically unchanged, and even where the waves are stronger, so that the pebbles are more or less constantly exposed to their force, it must be borne in mind that some of these coast pebbles have been swept down by rivers, or have already been affected by glacial action. In these cases the force of the waves will indeed modify the form, but along the lines of that already produced by the earlier agencies. Broadly stated, those that were round or oval would generally remain so, rectangular fragments might have their angles worn away and become elliptical, while flat fragments would not exhibit any notable change in shape.

When a group of pebbles have been long exposed to attrition by the waters of a powerful stream, especially where the current is intermittent, and where a large quantity of sand has been worked or blown into the stream by freshet or wind storm, they may become rounded by the erosive action of the water or by the abrasive power of the sand, as well as by the attrition consequent upon their sharp contact with one another. This is exemplified in the case of boulders in a river bed, it having been noted in certain streams on the Navajo Reservation that while the upstream sides of the boulders were polished and rounded, and even sometimes faceted and etched, but little change was observable on the downstream sides. This has been tested experimentally, holes an inch in depth having been drilled in opposite sides of sandstone boulders, and on examination five years later in five different localities where this had been done, the deepest hole remaining on the upstream sides measured but four-tenths of an inch, while in one locality the holes had entirely disappeared, and yet so trifling was the effect of the water on the down-stream side that a blue-pencil mark had not been washed away. Of course, the erosion of quartzite and limestone boulders tested in this way proved to be a much slower process, amounting to less than one-hundredth of an inch annually. Another important consideration in the shaping of pebbles by river-water is the swiftness of the current, it having been noted, for instance, that those which have been washed down the steep slopes of the Navajo Mountain and the edge of the Black Mesa are somewhat better rounded than those that have been borne along for a much greater distance by less swift-flowing water.

That striated, faceted, or polished pebbles are always of glacial origin, or that those of glacial origin usually offer these characteristics is far from the fact; indeed, it may rather be said that they are generally missing. The fluvio-glacial drift is much more widespread than ground moraine, and the pebbles found in the former rarely present these aspects; indeed, it has been noted that in an hour's search through the glacial drift of Connecticut, only a single such specimen may be met with. On the other hand, many pebbles of this type have been found under conditions plainly showing that the striation was due to other causes, in some instances, as with those occurring in conglomerates, to pressure and differential movement. The burying of white stones or lumps of quartz with the dead was not infrequent in early times in Ireland. The peasants of the north of Ireland call these Godstones. A cist found at Barnasraghy, County Sligo, was nearly filled with quartz pebbles, and not long since a white stone was found in a primitive burial place near Larne, County Antrim. That this was a usage confined to the earlier period of Irish history is generally admitted, and the discovery of such white stones in a grave is accepted as an indication that it belongs to an early date.

It has been suggested that these white stones were used for burials because of the symbolic meaning of the color, which to the minds of many primitive peoples was that of purity, as indeed it is still among most modern peoples, although the symbolism may not always be consciously accepted. White marble seems to most of us the most appropriate and beautiful stone for monuments, and if to a very considerable degree granite is now used as a substitute, this is principally because of its greater resistance to the deteriorating effect of atmospheric changes. Already in prehistoric times, the cave-dwellers showed a fondness for gathering quartz crystals and fragments, and specimens of those taken from the Auvergne Mountains have been found in the cave-dwellings of Les Eyzies; they may have been used as amulets or talismans. A legend of the great Irish saint, Columba, gives an instance of the curative use of white pebbles. After this saint had vainly entreated Broichan the Druid to free a Christian bond-maiden, as a last resort he menaced the druid with approaching death. The prediction or curse was speedily on the way to fulfilment, Broichan sickened unto death, and in his terror consented to free the maiden. Here-upon St. Columba went to the river Ness and picked up out of its shallows several white pebbles, announcing that they would, by the Lord's power, work the cure of heathen people. One of the stones was blessed by the saint and placed in a vessel filled with water, on the surface of which it floated, and as soon as Broichan had taken a draught of the liquid he was restored to perfect health.