The poetic description of the royal city Kusavati, given in the Maha Sudassana Suttanta, may perhaps have originated in some tradition regarding Ecbatana or Babylon. Seven ramparts surrounded Kusavati, the materials being respectively gold, silver, beryl, crystal, agate, coral and (for the last) “all kinds of gems.” In these ramparts were four gates—one of gold, one of silver, one of crystal and one of jade—and at each gate seven pillars were fixed, each three or four times the height of a man and composed of the seven precious substances that constituted the ramparts. Beyond the ramparts were seven rows of palm trees, the fourth row having trunks of silver and leaves and fruit of gold; then followed palms of beryl, with leaves and fruit of beryl; agate palms, whose fruit and leaves were of coral, and coral palms, with leaves and fruit of agate; lastly, the palms whose trunks were composed of “all kinds of gems,” had leaves and fruits of the same description, “and when these rows of palm trees were shaken by the wind, arose a sound sweet and pleasant, and charming and intoxicating.”[357] In Greek literature also there is a “gem-city,”—namely, the city of the Islands of the Blessed, described by Lucian in his Vera Historia.[358] The walls of this city were of emerald, the temples of the gods were formed of beryl, and the altars therein of single amethysts of enormous size. The city itself was all of gold as a fit setting for these marvellous gems. Hindu mythology tells of a wonderful tank formed of crystal, the work of the god Maya. Its bottom and sides were encrusted with beautiful pearls and in the centre was a raised platform blazing with the most gorgeous precious stones. Although it contained no water, the transparent crystal produced the illusion of water, and those who approached the tank were tempted to plunge into it and take a refreshing bath in what appeared to be clear, fresh water.[359] The Kalpa Tree of Hindu religion, a symbolical offering to the gods, is described by Hindu poets as a glowing mass of precious stones. Pearls hung from its boughs and beautiful emeralds from its shoots; the tender young leaves were corals, and the ripe fruit consisted of rubies. The roots were of sapphire; the base of the trunk of diamond, the uppermost part of cat’s-eye, while the section between was of topaz. The foliage (except the young leaves) was entirely formed of zircons.[360]