The subject of this article is, as its name sets forth, a diamond of a yellow hue. After the Orloff it is the largest cut diamond in Europe, weighing one hundred and thirty-nine and a half carats. Tavernier, who first mentions it, says "it has a tinge of yellow which is a pity." King declares, "on the highest authority," which he does not further particularize, that this tinge is a very strong one, almost destroying its brilliancy.

Yellow diamonds are not necessarily devoid of brilliancy, as we can bear witness from personal knowledge. There was recently offered for sale at a public auction in London a very large specimen known as the Orange Diamond, of one hundred and ten carats weight, which we carefully examined. The circumstances were decidedly adverse to the beauty of a diamond, for it was in the half-light of a London fog that we saw it, yet the stone seemed literally to shoot tongues of yellow fire from its facets. It was a round brilliant, and being set in a circle of about a score of white diamonds its tawny complexion was shown to admirable advantage. The jewel was supported on a delicate spring which vibrated with each step upon the floor, so that there was a constant coruscation of light around it.

It is difficult to establish the early history of the Austrian Yellow. Tavernier saw it in Florence somewhere about 1642, but he does not say whence it came. Its appearance proves it to be an Indian-cut rose, but that does not help us much with regard to its private wanderings in Europe. A good authority on diamonds, de Laet, who flourished shortly before Tavernier's time, declared that the largest diamond then known weighed seventy carats, which would clearly indicate that he knew nothing about the much larger yellow diamond. Tradition relates that it was bought for a few pence in the market at Florence, under the impression that it was a piece of glass! If this is so, one would be glad of some particulars of the moment when the happy possessor found out his mistake.

THE AUSTRIAN YELLOW—TOP AND SIDE.

Tavernier says that "the Grand Duke (of Tuscany) did him the honor to show him the diamond several times." He made a drawing of it, as he did of nearly all the large diamonds he saw, and his estimation of its value is two millions of livres (about four hundred thousand dollars)—a low price considering the size of the stone; but no doubt its yellow tinge had something to say to it. The Grand Duke of Tavernier's time was Ferdinand II., who reigned from 1621 to 1670—a man of considerable enlightenment, a protector of Galileo and an encourager of literature.

If there is any truth in the popular belief to which we shall presently allude, that diamonds promote the mutual affection of husband and wife, then indeed the great yellow stone had need of its charm in the case of Ferdinand's son and successor, Cosimo III. This luckless prince was married to Marguerite Louise d'Orleans, niece of Louis XIV., a young lady of flighty fancies and obstinate willfulness. Being deeply attached to her cousin of Lorraine, she was only induced to give her hand to the heir of Tuscany on the threat of imprisonment in a convent. She was married in 1660 and made her state entry into Florence amid unparalleled splendor. Immediately afterwards the courts of Europe rang with the quarrels of the newly-wedded pair. The Pope of Rome, the King of France, mother, sisters, aunts, ambassadors, bishops, cardinals, lady's maids, each in turn interfered with the object of restoring harmony, and each in turn ignominiously failed. Here surely was work for the diamond had it been possessed of its reputed power.

During this time and for many years afterwards, the diamond about which we write was known as the "Florentine" or "Grand Tuscan." It was the chief jewel in the treasure-house of the Medici, and no doubt filled a conspicuous place in the pageants of the grand-ducal court. The Florentine sovereigns were not wealthy, but upon state occasions they made extraordinary displays which sometimes deceived foreigners visiting among them into a false idea of their affluence. A wedding was always a favorite occasion upon which to show off their finery. For example, at the marriage of Violante de Bavière with the son of Cosimo III., a magnificence was displayed such as was never before seen even in Florence. The bride sat on a car studded with gems. Her father-in-law with his crown, no doubt containing the great diamond, upon his head, met her at the gate of San Gallo and escorted her to the palace.

This princess dying childless, the throne was occupied by Giovan-Gaston, another son of Cosimo III. and the flighty Marguerite. He likewise left no heirs, so with his death in 1737 terminated the great house of Medici. Giovan-Gaston was succeeded on the grand-ducal throne by Francis Stephen of Lorraine, who was forced much against his inclination to change his paternal duchy of Lorraine for that of Tuscany. He was married to Maria Theresa, archduchess of Austria, afterwards so famous as the Empress-queen who fought valiantly against Frederick the Great. By the will of Giovan-Gaston dei Medici all the statues, books, pictures and jewels of his palace were "to remain forever at Florence as public property for the benefit of the people and the attraction of foreign visitors," and none were to be removed from out of the Grand Duchy.

Francis Stephen and Maria Theresa entered their new capital, remained there four months, and then departing carried away with them the great Tuscan diamond. So much for the respect paid to the wills of dead princes! Henceforward the yellow diamond became known as the Austrian Yellow in recognition, we suppose, of the royal thief who carried it off from Florence.