Still farther east, in China, a more restrained and delicate beauty was developed. Piety and filial devotion taught the Chinese to limit their display. They cultivated the economy of good taste. The world’s largest known emerald, found in China, was carved into the figure of Kwan Yin, goddess of mercy. Jewels were not worn indiscriminately; they served not only to adorn but to signify station. A mandarin of the first rank wore ruby or red tourmaline; a mandarin of the second, coral or garnet; of the third, beryl or lapis lazuli; of the fourth, rock crystal; and of the fifth, other stones of white. Beyond all other stones the Chinese prized “the divine stone,” jade. While this occurs in various shades, even of blue, of red, of brown, it was, and still is, especially sought in ivory white and in the shades of green, from light apple to the dark “imperial jade.” This was, legend whispered, a crystallization of the spirit of the sea. Its possession conferred longevity, man’s prolonged moment in the eternity of the gods. A perfect piece of jade is left uncarved. As a pendant, brooch, or ring, it stands alone, in simple beauty. A cultured Chinese was likely to have one with him unmounted, just the stone, to cherish it and finger it and feel its silken surface. There were experts who could tell the quality, the very color, of a piece of jade, without looking at it, just from the feel. Treasured through the centuries in China, jade has come to be prized in the West as well. The Emperor Kuang-hou sent Queen Victoria, for her Jubilee, a sceptre of jade. The deep green of the richest jade, the divine stone, makes it a fit companion for the diamond, the monarch of gems. _Dark Age of the Diamond_ The diamond was not mentioned, in this summary narrative, until the description of the Taj Mahal. This greatest of precious stones—hardest of gems, and the only one that consists of a single element—was little known in the ancient world, and but slowly won appreciation in the West. At the height of the Renaissance, Cellini in 1568 set down the values of the precious stones, of flawless stones one carat in weight. A ruby of such specifications was worth 800 gold crowns; an emerald, 400; a diamond, but 100. (The more common sapphire was a far fourth, at ten gold crowns a carat.) The Dark Ages in southern Europe were not especially bright with gems. Individual rulers made some display, on crown, on hilt of sword, and ecclesiastical splendor was slowly gathering, along with decorated frames and representations of the Virgin Mary. On the other hand, the medieval Church frowned upon unseemly extravagance of display, and some monarchs, even Charlemagne when he doffed his rich crown of state, were sober and plain in their attire. _Tribes to the North_