I have a rather unusual idea for how to implement gemstones. I'm not sure how or even if this could work but I would like to see the colour and pattern of gemstones be randomly generated. There should still be the standard gemstones (diamonds, rubies, etc) but a small, randomly generated, code could occasionally be attached to a gemstone that makes it likely to be totally unique. I think this is what they call 'procedural generation'.
I think this would allow a genuine market to form for these types of gemstones, as different characters would value different colours and patterns. Naming schemes would probably arise in-game for the different categories of gems, it would add a unique element to PS that isn't (afaik) available in other RPGs.
Some other random thoughts and questions concerning gems:
- Gems could be set in weapons to increase their value (and make them look better).
- Rare gems could have magical properties (faster regeneration of stamina, etc.)
- Does the 'Gem Cutting' job skill allow players to create rings and pendants and stuff? If not maybe it should be changed to Jeweller.