Stone crosses have sometimes been utilized as rain-bringers, as in the case of one belonging to St. Mary’s Church in the Island of Uist, one of the outer Hebrides, off the Scottish coast. When drought prevailed here the peasants would set up this cross which usually lay flat on the ground, in the confident belief that rain would ensue. Of course, sooner or later, it was sure to come, and then the cross, having done its duty, was quietly replaced in its former horizontal position.[14] A mysterious stone mentioned in Rabbinical legend is called the _shamir_. This word occurs three times in the Old Testament (Jer. xvii, 1; Ezek. iii, 9; Zech. vii, 12), and in each signifies a material noted for its hardness. In the first of these passages there is express indication that the _shamir_ was a pointed object used for engraving, and the word is translated “diamond” in our Bible; in the two other cases it is rendered “adamant” and “adamantine stone,” respectively, thus leaving the determination of the substance an open question. However, as it is almost certain that the Hebrews were not familiar with the diamond, _shamir_ most probably signifies one of the varieties of corundum, the next hardest mineral to the diamond, and extensively used in classic times for engraving on softer stones. In the luxuriant growth of legend that sprang up in Rabbinical times, the _shamir_ is not forgotten. It is said to have been the seventh of the ten marvels created at the end of the sixth day of creation. In size, it is described as being not larger than a barley-corn, but it had the power to split up the hardest substances, if brought in contact with them, or even in their neighborhood. Some of the legends ascribe to it even more wonderful magic powers, so that, like Aladdin’s lamp, great buildings could be constructed by its help, Solomon having used it in the erection of the temple and other buildings. The etymology of the word indicates a pointed object, similar to our diamond-point, but in legend it is almost invariably described as a small worm, probably because of a fancied connection between this word and another designating a species of worm. Many have associated the Hebrew _shamir_ with the Greek σμίρις, or emery.