In Yucatan quartz crystals were not only used for divining, but also to ensure the success of the crops. The fact that such crystals have been found in the Indian mounds of Arkansas, North Carolina, and elsewhere, may warrant the supposition that they had been worn as talismans and then interred with the deceased persons as a most intimate part of their property. The writer’s personal observation in Garland and Montgomery counties, Arkansas, demonstrated that quartz crystals were to be found in mounds together with chipped arrow-points of chalcedony, although the crystals did not appear to have been worked in any way. The region about Hot Springs, Arkansas, has furnished some of the finest rock-crystal found in the United States. From North Carolina also have come many remarkable specimens, the largest of which, found in 1886, was unluckily broken up by the person who discovered it. In its crystal state it must have weighed about 300 pounds, and if cut would have furnished a crystal ball 4½ or 5 inches in diameter. This splendid crystal came from Phœnix Mountain, Chestnut Hill township, in Ashe County, North Carolina, and from the largest fragment recovered, weighing 51 pounds, several slabs 8 inches square and from half inch to one inch in thickness were cut. Nearby a crystal weighing 285 pounds was found, and another weighing 188 pounds. Some of the crystals from this locality had on one side a green coating of chlorite, and when this was not removed, the effect was as though one saw a green moss growing beneath a pool of water. The rock-crystal slabs have an advantage over glass when used for mirrors, as they more truly reflect the tints of a fine complexion. Brilliant crystals from Lake George and its neighborhood have been called “Lake George Diamonds.” In marked contrast with the large examples we have noted, many crystals of quartz are so small that 200,000 would have an aggregate weight of but one ounce and yet many are perfect crystals and doubly terminated. The presence of white quartz pebbles in some graves of the Indian Moundbuilders, appears to be indicated to a satisfactory extent in the case of certain specimens from the Etowah Mound in Georgia; these pebbles, which form part of the Steiner collections in the United States National Museum, were not, however, worked or polished in any way, nor are there any traces of use for ornament or decoration. On the other hand, white quartz pebbles from the Pueblo region of the Southwest offer undeniable signs of having been long used and are of frequent occurrence; some of these have been found in graves. In connection with the probable reasons determining their presence the designations “fire stones” or “charms” have been given them; some specimens of this worked quartz had evidently been worn as pendants, while others had probably been regarded as fetishes.[45]