Skull Sri Yantra 4" Grid Board, with three sets of six chips, $10. Board made out of 1/4" thick Birch wood. The Sri Yantra is a form of mystical diagram, known as a yantra, found in the Shri Vidya school of Hindu tantra. The diagram is formed by nine interlocking triangles that surround and radiate out from the central (bindu) point. The most common symbolic use of the skull is as a representation of death, mortality and the unachievable nature of immortality. Please state the three sets of chips you would like from the following list: Amethyst, Garnet, Howlite, Labradorite, Mookaite, Moonstone, Moss Agate, Obsidian Black, Prehnite, Quartz, Rainbow Moonstone, Ruby in Zoisite, Strawberry Quartz, Sunstone and Tiger Eye. Second picture is for representation of available chips only.