Color Encyclopedia of Gemstones

SECOND

EDITION

COLOR

NCYCLOPED1A OF

JOEL E AREM, PHD, FG. A.

COLOR iNCYCLOPEDIA

SECOND

JOEL Since

E.

EDITION

AREM,

PH.D., FG.A.

gem

gemologists,

1977,

jewelers, and

gem

collectors,

dealers have relied on

acclaimed sourcebook for immediate

this

information on gems. updated and revised, Color Encyclopedia of Gemstones Second Edition, is the most complete and comprehensive tabulation ever available on the properties of all known gemstone species and varieties. access

Now

essential

to

fully

,

With speed and convenience, the Encyclopedia will direct you to concise and accurate data on

particular

a

ability,

rarity,

book's

the

graphs

gems

gemstone's physical chemistry,

occurrence,

properties,

and market potential. And

spectacular

— over

300 are

that

avail-

in

photo-

full-color

all

—

many

illustrate

depicted

no

in

other

gemstone book.

A

major feature of

the

new coverage

this

second edition

is

of synthetic gems. In this

section you will find complete data on

all

the important synthetic materials, including those with and without natural counter-

There is also information on some of the more unusual synthetics some hardly ever encountered as cut gems and parts.

—

therefore posing serious identification prob-

lems.

And

the introductory material to this

section clarifies for the

the

definitions

true

of

first

time

in print

"synthetic"

and

"homocreate" materials, bringing gemology into line with internationally accepted nomenclature standards. Diagrams of the important crystal growth methods and descriptions of how they work round out the wealth of coverage on synthetics available to

you here.

Also of special interest, and edition,

is

new

to

this

a detailed analysis of color

and

measurement as applied to gemstones. Here the author presents a com-

color

prehensive

listing

of machine-generated (Continued

•>