GEMMOLOGY

A Practical Approach

R.N.P. de Silva

Paperback Book in Good Condition

Illustrated in Colour and Black & White

Printed 2002

165 Pages

Foreword

Preface

Introduction

Crystallography

Chemical Composition

Lustre

Hardness

Cleavage & Fracture

Colour

Specific gravity

Reflection & Refraction

Total Internal Reflection

Single & Double Refraction

Dispersion

Dichroism (Pleochroism)

Interference of Light

Absorption Spectrum

Polarized Light

Luminescence

Isomorphism

Inclusions

Styles of Cutting

Synthetic Gems

Imitation Gemstones

Some hints on Identification

Instrument used for Identification

Hand Lens

Hardness Points

Hydrostatic Method

Properties of Gemstones

Inorganic Gems

Organic Gems

Synthetic Gems

Some Rare Gemstones

Table of Hardness

Table of Specific Gravity

Table of Refractive Indices

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