^2d6 ^Result ^Defined Trade Good ^Unit Increment ^Base Price GP^
|2 |Rock Salt/Compressed Coal |1d6 x 7 |5 |
|3–5 |Riverstone |1d6 x 6 |10 |
|6–8 |Graphite/Quartz |1d6 x 5 |20 |
|9–11 |Jade |1d6 x 3 |30 |
|12 |Alabaster |1d6 x 2 |45 |

These are lots of non-precious stones. Players wishing to dabble in precious stones can purchase them on an individual basis using the normal rules for pricing.