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Practical Diamond Grading – Part 5 OLD

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Question 1 of 5

1. Question

Thermal conductivity tester work on all gemstones.

True
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False
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Question 2 of 5

2. Question

Tanzanite is a variety of zoisite.

True
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False
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Question 3 of 5

3. Question

Variety of gemstones are named by their colour.

True
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False
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Question 4 of 5

4. Question

Natural and synthetic gemstones have the same chemical, optical and physical properties.

True
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False
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Question 5 of 5

5. Question

Opals can absorb a lot of water.

a. True
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b. False
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8th December 2020/by saskia@comealive.co.za

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https://gemlab.co.za/wp-content/uploads/2025/06/Untitled-design-300x300.png 0 0 saskia@comealive.co.za https://gemlab.co.za/wp-content/uploads/2025/06/Untitled-design-300x300.png saskia@comealive.co.za2020-12-08 14:55:532021-01-14 08:32:24Practical Diamond Grading – Part 5 OLD

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Practical Diamond Grading – Part 4 OLD Practical Diamond Grading – Part 2

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