Page:A treatise on diamonds and precious stones including their history Natural and commercial.djvu/15

 EXPLANATION OF THE PLATES.

FRONTISPIECE.

COLORED STONES.


 * 1) Sapphire.
 * 2) Oriental Ruby.
 * 3) Amethyst.
 * 4) Topaz.
 * 5) Asteria.
 * 6) Chrysoberyl.
 * 7) Spinelle Ruby.
 * 8) Emerald.
 * 9) Topaz.
 * 10) Aquamarine.
 * 11) Amethyst.
 * 12) A Doublet.
 * 13) Turquois.
 * 14) Chrysoprase.
 * 15) Garnet.
 * 16) Sardoine.
 * 17) Onyx.
 * 18) Oriental Agate.

PECULIAR DIAMONDS.


 * 1) Regent Diamond.
 * 2) Pigot ditto.
 * 3) Austrian ditto.
 * 4) Blue ditto.
 * 5) Profile of ditto.
 * 6) Nassuc ditto.
 * 7) Grand Russian ditto.