Crystal Quiz
Understand crystals and minerals and how to identify them in about 10 minutes. 16 free questions with real world clues like hardness and cleavage show your current skill level, no sign up needed.
08:30
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DATA-BASED USER COHORTS
Who Usually Takes This Test?
BASED ON AGGREGATED, ANONYMIZED DATA FROM TENS OF THOUSANDS OF FREUDLY USERS.
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See How You Compare
Once you complete the test, your results are compared with real-world data from people in your country.
Below is a preview of how scores are typically distributed across each scale.
Below is a preview of how scores are typically distributed across each scale.
Crystal Knowledge (CK)
Crystal Knowledge (CK)
Average
7
Normal range
4.5 — 9.6
min.
0
max.
16
This curve shows how scores are typically distributed.
Once you complete the test, your result will appear on the scale so you can see how you compare.
Once you complete the test, your result will appear on the scale so you can see how you compare.
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SAMPLE QUESTIONS
Example Questions From the Test
- It is always transparent when held to light
- Its atoms or molecules have a repeating, ordered arrangement
- It must have naturally flat outer faces
- It is composed of only one chemical element
- Their carbon atoms have different arrangements and bonding
- Only diamond has atoms; graphite is a mixture
- Graphite contains no crystalline structure
- Diamond is hard only because it is transparent
- As a crystal because all solids are crystalline
- As an amorphous solid rather than a crystal
- As a mineral because shininess proves crystallinity
- As a crystal only if it is transparent
WHAT THE TEST MEASURES
About This Assessment
Crystal Quiz - Symptoms and Signs
How well do you understand crystals, minerals, and the clues used to identify them? This free 16-question crystal quiz combines familiar specimens with practical scenarios about hardness, cleavage, crystal growth, and internal structure. Choose the best answer to each question, then use your score band to gauge your current knowledge. It is an educational test—not a crystal-healing assessment—and no sign-up is needed.
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