Gemdle

A mineral identification game built on a library of more than 250 stones. The daily challenge shows five specimen photos, each to be matched with the correct crystal, rock or gemstone, followed by explanations of colour, lustre and hardness. An endless quiz, a stone identifier filtered by observable traits and an A–Z guide accompany it.

How you play

Trivia questions

Languages

English

Daily puzzle

Yes

Unlimited mode

Yes

• 7.5
  Catfishing

  Name the Wikipedia article from its categories
  Play
• 6.9
  Chemdle

  Solve an organic chemistry problem
  Play
• 6.7
  Beat Darwin

  Identify the species shown in a photo
  Play
• 6.7
  Capybaropolis

  Identify the animal from clues and a photo
  Play
• 6.2
  RangeGuessr

  Pin an animal's range and conservation status
  Play
• 6.0
  AtomixQuest

  Solve a periodic table challenge
  Play
• 5.6
  Linnaeus

  Classify a species down the tree of life
  Play
• 4.7
  fanimoji

  Match the right emoji to each animal trait
  Play