purpose of this book has been primarily to give assistance to the
employees of the Smith Patterson Company in understanding more fully
the diamond, pearl, and colored gem business by giving them, in a
condensed and accurate form, information that the writer considers
useful. Although he is aware that many larger works already exist which
cover the field in a most excellent and comprehensive manner, yet from
the very fact that there is such an excellent body of gem literature,
it is often hard to obtain a concise and accurate idea of the most
interesting points in this field without the labor of extensive study.
object of the writer has been to present the most important facts
concerning the nature of diamonds, pearls, and other gems, and the most
interesting aspects in the work of discovering and cutting or
preparing gems for the arts, and to give such facts as will be of
interest not only to the man in the business, but also to many admirers
of precious stones.