GemU - Lesson Five

Phenomena Gems- see how well you know this gem!

Let's see how much you have learned from watching and reading up on Phenomena Gems!

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* 1. First Name

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* 2. Last Name

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* 3. eMail

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* 4. Phone

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* 5. The technical term for the star effect seen in some sapphire and ruby stones gems is:

Tiger's Eye

Scintillation

Iridescence

Asterism

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* 6. What is the origin of the term "Chatoyancy"?

Italian, meaning brilliant star

French, meaning the eye of the cat

Greek meaning star light

Russian, meaning the eye of the cat

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* 7. The best cut to display a star or cat’s-eye effect is:

Round

Oval

Briolette

Cabochon

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* 8. How many legs or rays are present in star gems?

3 or 4

4 or 5

4 or 6

3 or 6

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* 9. The play of color phenomena is only seen in opal gemstones

True

False