1. Fancy cut diamonds are those with shapes that are not standard round brilliant cut.
2. Alluvial deposits are those in which the gems are mined from soft rocks.
3. Which gemstone has a greater range of colors?
4. Rubies are sometimes oiled to help mask fractures.
5. Ruby can be found in different colours other than red.
6. The hardness on the Moh's Scale of spinel is 8.
7. Emerald and aquamarine have the same chemical composition.
8. Padparadscha sapphire is also called fancy sapphire.
9. Emeralds are occasionally treated with colored fillers to make them look greener.
10. Pink topaz occurs in Pakistan.
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