CHAPTER VII.
ARTIFICIAL JEWELRY--HOW MADE AND HOW DETECTED.--Mock
Diamonds--“Paris Brilliants”--The Manufacture of Pastes--False Ruby,
Topaz, Sapphire, Emerald and Carnelian--How to Distinguish True and
False Gems--Imitation Pearl and Coral--Artificial Gold--List of
Precious Stones.....114
Underground Treasures: How and Where to Find Them A Key for the Ready Determination of All the Useful Minerals Within the United States · 第 7 / 9 章