GemStone may refer to:

• Gemstone, a type of mineral
• GemStone IV (or GemStone III), an online multiplayer game by Simutronics Corporation
• GemStone Systems, a data management company
• Gemstone (database), an object-oriented database

• Tree Farm
• Tree Farming
• Tree featherflower
• Tree feather-flower
• Tree Flitter
• Tree flitter
• Tree-fort
• Treefort
• Tree gecko
• Tree geebung
• Tree germander
• Tree grate
• Tree groundsel
• Tree grove
• Tree Hill (disambiguation)
• Treehole flatwing
• Tree House (album)
• Treehouse (album)
• Tree House Brewing Company
• Treehouse Detectives
• Treehouse Foods Inc
• Treehouse (Into the Dark)
• Treehouse (I See Stars album)
• Tree House (I See Stars album)
• Treehouse (Nintendo)