There is no doubt that the five gems—diamond, ruby, emerald, sapphire, and pearl—have grown more fully than all others into our ways of living. They have become, as I shall indicate in this chapter, adornments not only of our persons but of our speech and writing. They are used not only in figures of jewelry but in figures of speech, to express human beauty, or eminence, or virtue. The poet and the orator, as well as the monarch and the lover, have utilized the glamour of the gem.
Diamond
Supreme in human imagination is the diamond, the hardest of all stones. The word diamond captures this significance, for it is from Greek adamas, meaning unconquerable, the tameless stone.
The diamond is also the only gem that is entirely composed of a single element. It is carbon, which also appears in its more common and less costly forms as soot, jet, and coal. The diamond is pure carbon crystallized in regular octahedrons, eight-sided figures.
For a long time, one word was used to mean both the diamond and the lodestone, the natural magnet. In French today, the gem is diamant, and the magnet is aimant—which also means loving. Perhaps the word changed because the natural magnet, attracting things to it, was thought of as “the loving stone.” The diamond is the beloved stone.
Most diamonds at their best are colorless, with perhaps a bluish glow. They may also be blue, green, violet, less often red—and black. The black diamond is usually unwanted for jewelry, but is used by lapidaries and others for cutting, grinding, and polishing hard stones.
If a jeweler speaks of a Matura diamond or a Ceylon diamond, he is using an old trade name for a zircon. Similarly, a Welsh, Irish, Cornish, Quebec, or California diamond is likely to be an attractive piece of rock crystal.
True diamonds were known in Asia at least as far back as 900 B.C. India was the homeland of the gem for many years. The best stones in the sixteenth century were those cut in Hyderabad, India, in the famed city of Golconda. Rich findings were made about 1720 in Brazil; in Borneo in 1738; elsewhere, diamonds were discovered in less significant amounts. But by far the richest hoards were unearthed in 1867 in South Africa, which is still the world’s greatest source of diamonds.
Although the lozenge is the characteristic shape of its crystal surface, the rough diamond stone is found in many shapes and cut into great variety. Because of the tears that the great tragic actress Sarah Bernhardt wrung from the audiences at his melodramas, Victor Hugo presented her with a tear-shaped diamond.
Among the many literary references to the diamond, the Elizabethan playwrights were particularly fond of the expression “diamond cut diamond”, meaning in that aristocratic age, when great man matched with great. In the more democratic nineteenth century, particularly with regard to those most democratic of spirits, the pioneers—such as the Americans opening up the West—it became popular to speak of an uncouth, unpolished but fundamentally fine fellow as “a diamond in the rough.”