Gem or Gemstone may refer to:
- Diamond
- Emerald
- Ender Pearl
- Eye of Ender
- Glowstone Dust
- Lapis Lazuli
- Nether Quartz
- Nether Star
- Prismarine Shard
- Redstone Dust
- Ruby
Crystal may refer to:
- End Crystal
- Prismarine Crystals
- Crystal was a block Notch mentioned adding.
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