SHYLOCK: “_Thou torturest me, Tubal: it was my turquoise: I had it of Leah when I was a bachelor: I would not have given it for a wilderness of monkeys._” (Merchant of Venice, Act III, Sc. 1.) UNION In Hamlet, Shakespeare mentions the pearl twice under the name UNION. KING: “_The King shall drink to Hamlet’s better breath; And in the cup an union shall he throw, Richer than that which four successive kings In Denmark’s crown have worn._” HAMLET: “_Drink of this potion. Is thy union here?_” (Act. V, Sc. 2.) CHAPTER XXXIII FORMS, COMPOSITIONS, CHARACTERISTICS, ZODIACAL CLASSIFICATION, AND PLACES OF ORIGIN AMBER _Hardness_: 2-2.5. _Lustre_: Resinous. _Chemical Composition_: Carbon 78.96. Hydrogen 10.51. Oxygen 10.52. _Specific Gravity_: 1.10-1.13. _Properties_: Becomes highly electric by friction. When submitted to heat, organic compounds escape and leave a black residue. _In the Zodiac_: Amber is under the heavenly Taurus. _Where found_: Chiefly on the Baltic coast. On the Danish coast. Parts of Asia, etc. BERYL EMERALD—AQUAMARINE _Crystalline System_: Hexagonal. _Hardness_: 7.5-8. _Lustre_: Vitreous or Resinous. Transparent to translucent. _Refraction_: Weakly double. _Chemical Composition_: Silicate of Aluminium and Beryllium. _Chemical Symbol_: Be_{3 Al_{2 (SiO_{3})C. _Specific Gravity_: 2.63-2.75. _Dichroism_: Distinct. _Properties_: Exhibits frictional electricity. The emerald clouds before the blowpipe flame without fusing but under intensified heat the edges curve. With Borax the stone melts into a pale green bead. It resists acids but is affected by microcosmic salt. The stone is so fragile when taken out of the mine that friction crumbles it. _In the Zodiac_: All varieties of Beryls are under the Heavenly Taurus. _Where found_: Generally all over the world. Chiefly in Ekaterinburg, Brazil, India, United States, Australia. CHRYSOBERYL ALEXANDRITE—ORIENTAL CHRYSOLITE—CYMOPHANE OR CHRYSOBERYL—CATSEYE