These are usually yellow, not green, but variable.
[INORGANIC:PERIDOT]
[USE_MATERIAL_TEMPLATE:STONE_TEMPLATE]
[MATERIAL_VALUE:20][DISPLAY_COLOR:2:7:1][TILE:15][IS_GEM:peridot:STP:OVERWRITE_SOLID]
[ENVIRONMENT_SPEC:GABBRO:CLUSTER_SMALL:100]
[SOLID_DENSITY:3335] Range is 3220 - 3450
[STATE_COLOR:ALL_SOLID:GREEN-YELLOW]