In The Witcher computer game
- The teleportation crystal which Kalkstein gives Geralt in Chapter II is also labelled as a gem, but it can neither be bought nor sold as it is a quest item.
- The swordsmith off the Trade Quarter marketplace will require a gem before he reforges a sword. There seems to be no benefit from doing this, though.
- Amber • Amber dust • Amber fragment • Flawless amber
- Amethyst • Amethyst dust • Flawless amethyst
- Diamond • Diamond dust • Flawless diamond
- Emerald • Emerald dust • Flawless emerald
- Ruby • Ruby dust • Flawless ruby
- Sapphire • Sapphire dust • Flawless sapphire
There are also several crystals: