A recent type of archer’s thumb ring in this collection, of the Ch’ien-Lung period (1736–1795 A.D.), is of cylindrical form, the thick solid side bevelled inward at the base so as to adjust the ring to the hand; the convex top slopes downward from the middle. This is of a beautiful light emerald-green jadeite, clouded here and there with shades of greenish gray. It has diameters of 1.06 inches and 1.25 inches, and weighs about 1⅔ ounces. The specific gravity and hardness are those of the jadeite variety of jade, a silicate of aluminum, while nephrite is a silicate of magnesium (No. 508). The Bishop Collection also contains two archers’ rings of the original type, with a wide flange on the lower side. These are entirely of carnelian, and are representative of the kind really used by archers. The greater part of the thumb-rings, many of them called more or less loosely “archers’ rings,” were never designed for any such special use, but constitute a modification of the original form to suit them for habitual wear. Indeed, in many cases the more ornate were rather used as pretty toys to handle, as Orientals are fond of handling gems or small jewels, than for wear. Of course the gradual disuse of archery in military operations contributed greatly to the change of fashion. In this collection may be seen a finger-ring (chih-huan) of white jade (nephrite) set with jewels. Its shape resembles that of an archer’s ring and it is decorated with floral designs, the effect enhanced by sixty precious stones, comprising twenty-four rubies, thirty-two emeralds and four diamonds. This ring is of Indian workmanship, those made in China scarcely ever having any precious-stone adornment. In the floral ornamentation a row of rubies and emeralds cut _en cabochon_ are outlined in gold so as to represent flowers, while in the field are four conventionalized upright sprays, each composed of three flowers, the upper one a facetted diamond, while the lateral pair are facetted emeralds. On the upper rim an undulating floral scroll has stem and leaves of gold, and flowers set alternately with rubies and emeralds.[175]