26. Metals and ceramics --
28. Composite stones: doublets, triplets and soude stones --
29. Less common gemstones --
30. Rarely fashioned species --
31. Gemstones in their rough state --
32. How crystals are grown --
33. Synthetic crystals for the collector --
34. The enhancement of gemstones --
35. Locality information.
1. Gem testing: some disappointments, instruments and techniques --
3. Ruby and sapphire: the corundum gemstones --
4. Emerald, aquamarine and the beryl group of gemstones --
8. Chrysoberyl: alexandrite, cat's-eye and other varieties --
11. The garnet group of gemstones --
15. Moonstone and the feldspar minerals --
16. Rhodochrosite, tanzanite and rhodonite --
25. Natural and artificial glass.
