These are mostly red or yellow on white.
[INORGANIC:BROWN JASPER]
[USE_MATERIAL_TEMPLATE:STONE_TEMPLATE]
[MATERIAL_VALUE:2][DISPLAY_COLOR:6:7:0][TILE:15][IS_GEM:brown jasper:STP:OVERWRITE_SOLID]
[ENVIRONMENT:SEDIMENTARY:CLUSTER_SMALL:100]
[SOLID_DENSITY:2650] Common to quartz gems
[STATE_COLOR:ALL_SOLID:BROWN]