|This feature has one or more outstanding bugs in the current release version. Please view the Bugs section.|
Rock crystal, one of many types of quartz crystals (SiO2), is a type of gem. When combined with pearlash at a glass furnace, it can be used to make crystal glass items. Due to a bug, however, this is currently not functional - despite rough rock crystals being available, the game will announce 'Needs glass-making rough gems'Bug:1498. See the bug entry for information on how to patch this bug for version 0.31.25 on Windows or Linux.
[INORGANIC:CRYSTAL_ROCK] [USE_MATERIAL_TEMPLATE:STONE_TEMPLATE] [TILE:15][IS_GEM:rock crystal:STP:OVERWRITE_SOLID][DISPLAY_COLOR:7:7:1][CRYSTAL_GLASSABLE][MATERIAL_VALUE:2] [ENVIRONMENT:ALL_STONE:CLUSTER_SMALL:100] 11-30 semi-precious