I Magic Stones and Electric Gems
Project Gutenberg EPUB3 edition
Kunz, George Frederick
The supersensitiveness of the innocent child-soul to the most delicate impressions, and hence to the radiations or emanations from precious stones, is well brought out in the pretty tale by Saxe Holme (Helen Hunt Jackson), entitled “My Tourmaline.”[89] The particular specimen here immortalized was one of the finest from the famous Mount Mica deposits in the State of Maine. One day, while on a country ramble, the little heroine’s eye is caught by the color and sparkle of a brilliant crystal lodged in the gnarled roots of an old tree. In springing forward to secure this pretty treasure the girl trips on the outstanding roots, falls, and sprains her leg very seriously, so that she is laid up for six weeks. However, the beautiful crystal is her great consolation through the long, dreary weeks, and, strange to say, she comes to feel that it has a kind of life in it. This is manifested to her and also to some others, on touching the stone, by a pricking or tingling sensation in the hand; but to the child the sensations excited by the wonderful crystal, as perfectly formed as though cut by a lapidary, red at one end, green at the other, with a separating band of white, are much more pronounced. When it is placed in the little silken bag that has been made to hold it, and is laid against her cheek, her feverish restlessness gradually disappears and gives place to tranquil sleep. More than this, she is aware of a species of subconscious sympathy with the tourmaline.
So intense is this sympathy that although the child consented to part with her crystal that it might be offered as a unique specimen to a foreign museum, and was heart-broken to learn that through some carelessness it had been lost while being taken thither, she recognized its presence long years after, when, travelling in Europe as a young bride, she entered the cabinet of an enthusiastic collector to view his specimens, and was in no wise surprised when she really found her “Stonie” there among his prized tourmalines.
In connection with this pretty recital it is interesting to note that the first chance observation of the attractive qualities of tourmalines is said to have been made in Amsterdam by a group of Dutch children whose attention had been attracted by a number of tourmaline crystals brought from the Orient, and who were puzzled to see bits of ash and straw attracted to the stones. This came to the knowledge of some Dutch lapidaries, who for a time called the stone Aschentrekker, or “Ash-Attractor.”[90] Our name tourmaline is derived from turmali, the name given the stone by the natives of Ceylon.
There seems some little likelihood that certain examples of the gem called lychnis and noted by Pliny may have been varieties of the tourmaline. As the first tourmalines brought to modern Europe came to Holland from Ceylon, we might conjecture that those kinds of lychnis said by Pliny to have been brought from India had a like origin. Of these Indian specimens, the finest examples of this gem, one kind resembled the carbuncle or ruby, while another bore the designation Ionia because its color was like that of the violet (in Greek ion). The most striking peculiarity of the lychnis was its power to attract straws or bits of paper, when it had been heated by the sun’s rays or by hand-friction.[91]
Such is the confusion in the statements made by the early Greek and Latin writers as to the emerald, under which generic name they seem to have included almost all green stones of any ornamental or other value, that we cannot absolutely reject the conjecture[92] that Theophrastus (third century B.C.), the earliest of these writers on precious stones, might have referred to specimens of green tourmaline, when he states that the true emerald appeared to have been produced from jasper, as one of the Cyprian specimens was said to have consisted of one-half jasper and the other half emerald, the metamorphosis as yet being incomplete.[93] We admit that if Theophrastus uses the word jasper here to signify the reddish variety, we would have the combination of green and red zones in a single crystal sometimes observable in tourmaline. How this can be reconciled with the previous statement of the same author that the Cyprian “emeralds” which came from the copper mines of that island were chiefly used for soldering gold, and hence seem to have been of the class of mineral called chrysocolla by ancient writers, is, however, not easy to suggest.[94]
The so-called Brazilian emeralds mentioned by the Dutch mineralogist, Johann de Laet, as having been found shortly before 1647 in mines near Spiritus Sanctus, may perhaps have been green tourmalines. These crystals were described by Gesner as of cylindrical form, striated, and of a vitreous lustre; their color was like that of the prase and they were transparent. Although De Laet adds the assertion that the Oriental emerald (green corundum) was as hard as the sapphire, the Brazilian emeralds approached more closely to the Oriental in point of hardness than did emeralds from any other source of supply;[95] and green sapphires have never been found in Brazil, while green tourmalines have been.
The earliest published work in which the electric properties of tourmaline are noted appears to be an anonymous or quasi anonymous treatise published in 1707, certain initial letters of the quaint title being italicized to indicate the initials of the author’s name.[96] The first scientist to derive the action of the so-called Aschentrekker or “Ash-Attractor” from electric energy is said to have been the great Linnæus, who bestowed upon the tourmaline the name of the “Electrical Stone.”[97]
The attractive properties of the tourmaline are said to have been first brought to scientific notice by M. Louis Lémery, in a report made during 1717 to the French Academy of Sciences; however, Lémery was inclined to attribute them to magnetic influence. That these phenomena of attraction and repulsion were really due to the electric properties of the stone was first clearly brought out by the German physicist, Franz Ulrich Theodor Aepinus, and his conclusions were communicated to the Berlin Academy of Sciences in 1756.[98] Aepinus made his experiments upon two specimens of tourmaline from Ceylon, which had been furnished him by Lehmann, a fellow-member of the Berlin Academy, who, as Aepinus frankly admits, first drew his attention to the electric action of the stone. That not only friction but heat also should develop the electric energy, both positive and negative, of the tourmaline, serves to differentiate it from many other potentially electric substances, in the case of which friction alone is effective.
A SIMPLE APPARATUS FOR ILLUSTRATING THE ELECTRIC PROPERTIES OF THE TOURMALINE The stone is suspended from a hollow rod and will be attracted by the finger, if the latter be brought within a short distance of the tourmaline. When the stone has been slightly heated, its positive electricity will draw toward it the heart-shaped piece of paper, just as amber attracts paper, or magnetic iron does iron filings.
The specimen shown by M. Lémery to the French Academy of Sciences in 1717 is stated to have come from “a river in the Island of Ceylon,” and is described as being of small size, flat, orbicular, quite thin, of a brown color, and smooth brilliant surface.[99] Its peculiar property of attracting and then repelling ashes or iron filings as well as bits of paper, was duly noted. This specimen had cost M. Lémery 15 livres. After reciting the constant repulsion and attraction exercised by a magnet upon the needle, the attraction by the opposite pole, and repulsion by the same pole, he proceeds to remark that this Cinghalese stone acted quite differently, since it first attracted and then repulsed the same object presented in the same way. This intermittent or irregular action was in his opinion to be explained by the theory that a vortex was intermittently developed in the substance. As it begins the small bodies are attracted, when it ceases they remain stationary, but when it is renewed “and there emanates from the stone a material analogous to the magnetic emanation” then the bodies are repulsed. Another peculiarity was that the body which had been repulsed could not again be attracted, whence the conclusion was arrived at that the stone’s repellent force was superior to its attractive power. These necessarily somewhat inexact observations are interesting as marking one of the earliest attempts to explain these phenomena, even although the explanation is faulty.
The great French crystallographer, Abbé Haüy, relates his experiments on a tourmaline crystal.[100] He set this crystal in steel clamps, with a long stem which was inserted in a wooden handle, and then subjected the tourmaline to the heat of a brasier. As the heat augmented and penetrated the stone, its natural electric force became decomposed, the two component fluids being forced to separate from each other. It was now necessary to cool the tourmaline off a little; when too much heated the electrical phenomena were interrupted; they were also diminished in intensity when the stone became cool again. The perfect crystal chosen for experiment clearly showed the negative and positive electrical poles; even the smallest pieces showed this, and, indeed, if a very small piece were broken off the positively electric side of a crystal, it would preserve this positive electricity and soon develop a negative electricity also.
We may be somewhat loath to doubt the tale that little Dutch children were the first to note what to them was the queer action of some bits of tourmaline, but preference should probably be given to the statement that the discovery of the electric phenomena induced by heating in these stones was due to the fact that some Dutch jewellers put specimens of tourmaline in the fire to test their hardness, and then found that the stones attracted or repelled the ashes of the fire.[101]
Toward the middle of the eighteenth century Dr. Haberden, of London, confirmed the deductions of Lémery and the somewhat later experiments of the German physicist Aepinus, and the gay world of London took up the idea, causing the new stone to become a great favorite with the fashionable. One of Hogarth’s inimitable designs depicts a spendthrift fop who has just been arrested while his attention was riveted on the strange phenomena shown by the tourmaline.
In view of the important experiments made by Benjamin Franklin in the then almost unexplored field of electricity, it is easy to understand that the accounts of the newly-discovered electric properties of the tourmaline should have possessed considerable interest for him. This is testified to by a letter he addressed to Dr. William Haberden, June 7, 1759.[102] Herein he expresses his thanks for two tourmalines his correspondent had sent him, and states that he is returning the smaller one. Of the electric phenomena he writes that he had heard some “ingenious gentlemen abroad” had denied the negative electricity displayed by one side of a tourmaline, but he believes the failure to observe could be explained by defective cutting of the specimens used, the positive and negative planes having perhaps been obliquely placed; to obviate this he suggests that the positive and negative sides should be accurately determined before the operation of cutting begins. The larger of the specimens sent by Dr. Haberden was retained by Franklin, who had it mounted on a pivot in a ring, so that either side could be turned outward at will. He notes as a curious circumstance that when he wore this ring, the natural heat of the finger sufficed to charge the stone, causing it to attract light bodies. Several of his experiments were made with a cork ball suspended by a thread, and he claims that the attractive force of the positive face was increased by coating it with gold-leaf attached to the stone by white of egg.
This greater effect he supposed “to be occasioned by the united force of the different parts of the face collected and acting together through the metal.”
While the various corundum gems, ruby, sapphire, Oriental topaz, Oriental amethyst, etc., offer a remarkable instance of the many varieties of beautiful coloration observable in a practically identical substance, no single gem-mineral can be said to equal tourmaline in this respect, more especially, however, in the combination of several colors sometimes disposed in bands, at other times in concentric circles in the same crystal. When to this we add its peculiar electric qualities, we may truly say that a fine tourmaline answers our idea of what a talismanic gem or a gem-amulet should be better than any other of the beautiful crystals with which bountiful nature has provided us. These most attractive stones are to be found in widely separated regions on the earth’s surface, as fine examples have been discovered in the State of Minas Geraes, Brazil, and in our own land, in Maine and California especially. Where the color is homogeneous we may have the splendid red or rose-colored variety called rubellite, from its resemblance to the ruby, or the blue tourmaline gem named indicolite.
In times of old there was a belief that stones of various kinds would guard against the assaults of evil in the form of witchcraft, disease, and other disagreeable visitations. It was a warlike period in which peace was an unheard-of doctrine, and now that the idea of peace has become one of the ideals of present-day conditions, it is interesting to know that nature has furnished us with a stone at once beautiful, interesting, and illustrating the great fundamental principle of unity and peace.
The Peace Stone is formed by the union in one crystal of the green and the red tourmaline, with an intervening band or zone of white, the latter strikingly beautiful effect being due to the combination at this point of the red coloring matter, manganese, and the iron constituent, the source of the green hue; these two materials, by their union, neutralize each other, furnishing the transparent, colorless vein or zone. A slightly different combination of colors appears in a fine crystal, found some years ago at Mount Mica, Oxford County, Maine; this even offers a kind of “triple alliance,” as it shows blue in its lower half, passing through white and pink to a grass-green at the upper end.[103]
These three hues combined in one body, in indissoluble union in spite of the differences of quality and color, yet represent one principle. This action of manganese in neutralizing the iron is well known to glass-makers; otherwise white glass could not be made. It would all be greenish in tint were it not for the use of oxide of manganese, or “glass-maker’s soap,” as it is termed, which neutralizes the production of a green tint by the iron and makes the white hue.
This beautifully symbolic stone is found in Paris, Maine, in San Diego County, California, and in Brazil. At times the outer edge of the stone is green, a transparent white zone surrounding the interior red zone, the whole looking for all the world like a section of watermelon, and hence it is sometimes called the “Watermelon Stone.” Then again, the colors are joined in longitudinal strips, showing them side by side. This variety of tourmaline, although rare, is not especially costly, and is one more addition to the stones of sentiment, and more especially to those appropriate as symbols of our fair ideal, universal peace.
We can see symbolized in them the great and consoling fact that, however marked may be the differences between any two peoples, they need not be cause for enmity, but may instead become true and enduring sources of peace and bonds of union. The characteristic talents of each one will supplement and complete those of the other, so that working together in harmony they may accomplish far more for each other and for humanity in general than either could do singly.
At an early date amber was brought from the Baltic coast to Rome, and Tacitus states that those who collected it called it glæsum, a name later applied to the glass introduced into that region by Roman traders. The natives knew nothing of the nature or growth of amber, and had no use for the material, only collecting it for export to Rome, where it commanded such a high price as to excite their astonishment. Tacitus gives in the following words his theory of the origin and character of amber—his chief error being due to his belief that the substance was of very recent formation.[104]
Now you must know that amber is a juice of trees, since various creatures, some of them winged, are often found in it. They have become entangled in the liquid and then inclosed when the matter hardened. Therefore I believe that, as incense and balsam are exuded in the remote East, so in the luxuriant groves and islands of the West are juices which are forced out by the sun close to them. These flow into the neighboring sea and are washed up by the tempestuous waves on the opposite shore. If you test the quality of amber with fire, it may be lighted like a torch and burns with a small, well-nourished flame; then it is resolved into a glutinous mass resembling pitch or resin.
Both Juvenal[105] and Martial[106] relate that effeminate Romans used to hold balls of amber in their hands to cool them during the summer heat. If any such agreeable sensation was really experienced, it must have been due to the well-known electric properties of this substance. It is stated that the Chinese often place pieces of amber on or in their pillows,[107] a use that may have been suggested by the same considerations.
As a proof of the extravagant value set upon amber by the Romans of the first century, Pliny notes that a very diminutive figure of a man, cut out of this substance, sold for a higher figure than did a healthy, vigorous slave. The popularity of this material was also attested by the fact that in the gay world of Rome the term “amber hair” was used to designate a rare and peculiar shade that became fashionable in this period.[108] It seems probable that this modish shade was somewhat lighter than the “Titian hair” once so much favored, although the difference may not have been very great.
A change of hue in amber was thought to portend a waning of love on the part of the giver, as is shown by the following not especially melodious lines from “The Fruits of Jealousy” published by Richard Tofte in 1615:[109]
Thy tokens which to me thou sent
In time may make thee to repent;
Thy gifts do groan (bestow’d on me)
For grief that they thee guilty see.
The amber bracelet thou me gave
(For fear thou shouldst shortly wave[110])
From yellow turned is to pale,
A sign thou shortly will be stale.
Not only for curative purposes and for general use as an amulet was amber prized, but an amber necklace was sometimes regarded as an especially auspicious decoration for a bride at her wedding, as is shown by an exceptionally fine necklace of facetted amber beads from Brunswick, Germany, made in the eighteenth century.
Our earliest authority on the curative use of amber, the great encyclopædist Pliny, states that in his day the female peasants of the valley of the Po, in northern Italy, might be seen wearing amber necklaces, principally as ornaments, but also because of their remedial powers; for even at this early period it was generally believed that amber had most excellent effects in diseases of the throat and tonsils. The peasants of this region were especially subject to such disorders, and Pliny conjectures that they were caused by the different sorts of water in the neighborhood of the Alps.[111] He probably refers not only to diseases of the throat, properly so called, but also to a swelling of the glands of the neck, the goître with which so many of the peasants living on the slopes of the Alps, and in other mountainous regions of central Europe, are afflicted.
The golden-hued amber was called chryselectrum by Callistratus, as cited by Pliny. This was said to attract the flame and to ignite if it came in contact with the fire. If worn on the neck it was a cure for fevers; if powdered and mixed with honey and oil of roses it was beneficial for dimness of vision, and its powder, whether taken by itself or in water with gum mastic, remedied diseases of the stomach.[112] In ancient and medieval times the fear of poison being administered in food or drink was very great, and any substance that was credited with the power to show the presence of poison, by some change in clearness or color, was highly valued. An amber cup was said to reveal the admixture of any of the various kinds of poison with the liquid it contained.[113]
The use of amber as a preventive of erysipelas finds a defender in Rev. C. W. King, who writes as follows:
NECKLACE OF FACETED AMBER BEADS German. Eighteenth century.
That the wearing an amber necklace will keep off the attacks of erysipelas in a person subject to them has been proved by repeated experiments beyond the possibility of doubt. Its action here cannot be explained; but its efficacy in defence of the throat against chills is evidently due to its extreme warmth when in contact with the skin and the circle of electricity so maintained.[114]