III. True or False? 1. Immersion liquids are used for studying inclusions before faceting. True False 2. Refractive index and dispersion are of prime importance for faceted stones. True False 3. 14,000 grit diamond is equal to 1/2 micron. True False 4. Silicon carbide is the same as corundum. True False 5. Cast iron pipe fittings are used in sphere machines. True False 6. Anti-freeze is a highly recommended lapidary coolant. True False 7. Numerous short parallel cuts are an aid to blocking out a carving. True False 8. If a scratch develops during polishing, it is necessary to go back to the fine grit. True False 9. Soft gem materials for faceting can be polished with wax laps. True False 10. For chatoyant gems, slab the rough parallel to the fibers. True False Your Score is:

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