pearl gemology &amp buying guide - a preview

8132019 Pearl Gemology ampamp Buying Guide - A Preview

httpslidepdfcomreaderfullpearl-gemology-amp-buying-guide-a-preview 114

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983078

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E983158983141983154983161983156983144983145983150983143 Y983151983157 N983141983141983140 983151 K983150983151983159 A983138983151983157983156 P983141983137983154983148983155





P983141983137983154983148 G983141983149983151983148983151983143983161983078

B983157983161983145983150983143 G983157983145983140983141

By

Milad Darejeh

E983158983141983154983161983156983144983145983150983143 Y983151983157 N983141983141983140 983151 K983150983151983159

A983138983151983157983156 P983141983137983154983148983155



Notion Press

5 Muthu Kalathy Street TriplicaneChennai - 600 005

First Published by Notion Press 2013

Copyrightcopy Milad Darejeh 2013

All Right Reserved

ISBN 978-93-83185-83-2

This book has been published in good faith that the work of

the author is original All efforts have been taken to make the

material error-free However the author and the publisher

disclaim the responsibility

No part of this book may be used reproduced in any manner

whatsoever without written permission from the author exceptin the case of brief quotations embodied in critical articles and

reviews



Contents

I SAE OF AR IN PEARL GEMOLOGY 1

11 General Introduction 1

12 Te History of Pearls 3

121 Te 4000 Year History of Pearls 3

122 Pearls in Roman History 4

123 Pearls in Greek History 5

124 Pearl History of Egypt 5

125 Pearl History of China 5

126 Pearl History of India 7

127 Pearl History of Persia 8

II FUNDAMENAL amp PRINCIPLES 11

21 Natural Pearls 11

211 Discovery of Natural Pearls is Rare 12

22 Cultured Pearls 13

221 Cultured Pearl Formation 13

222 Natural Pearls vs Cultured Pearls 14

223 Cultured Pearls History amp Industry 15



vi Contents

23 Pearl Farming ampCultivation 16

231 Pearl Quality 18

232 Pearl Nucleation 19

233 Te Pearl Rafts 20

234 Te Birth of a Pearl 21

III NAURAL PEARLS 23

31 Melo Melo Pearls 23

32 Abalone Pearls 24

33 Conch Pearls 28

34 Pearisan Gulf Pearls 30

IV CULURED PEARLS 33

41 Famous Cultured Pearls 33

42 Te 6 Cultured Pearl Quality Factors 35

421 Nacre 36

422 Luster (Shine) 36

423 Surface 37

424 Shape 38

425 Color 38

426 Size 39

43 Cultured Pearl Nacre 39

431 Nacre Quality Classifications 39



Contents vii

432 Nacre Value 40

44 Cultured Pearl Luster 40

45 Cultured Pearl Surface Quality 41

451 ypes of Surface Quality classification 42

46 Cultured Pearl Shapes 42

47 Pearl Color Basics 44

48 Cultured Pearl Size Basics 47

481 Te Importance of Size 47

V AKOYA PEARLS EVALUAION 49

51 Akoya Pearl Basics 49

52 Characteristic of the Akoya Pearl 49

53 Akoya Pearl Overtones 51

54 Akoya Pearl Grading System 52

55 Akoya Pearl Size Guideline 55

56 Japanese Akoya Pearls vs Chinese Akoya Pearls 56

VI FRESHWAER PEARL EVALUAION 59

61 Freshwater Pearl Basics 59

62 Freshwater Pearl Culturing 59

64 Freshwater Pearl Colors 62

65 Freshwater Pearl Grading 63

66 Freshwater Pearl Sizes 64



viii Contents

VII AHIIAN PEARL EVALUAION 67

71 Black ahitian Pearl Basics 67

72 ahitian Pearl Grading 68

721 ahitian Pearl Value Factors 69

73 Size and Shape 69

74 Color and Luster 70

75 Surface Quality 71

VIII SOUH SEA PEARL EVALUAION 73

81 South Sea Pearl Basics 73

82 South Sea Pearl Colors 74

83 South Sea Pearl Grading 74

84 South Sea Pearl Sizes 74

IX SAL WAER PEARLS 79

91 Saltwater Pearls 79

92 Shape of Saltwater Cultured Pearls 81

93 Saltwater Pearl culture 81

X PEARL INDUSRIES 83

101 Te legendary Kokichi Mikimoto 83

102 Pearl Farming 84

103 Te Pearl Nucleus 87

104 Pearl Harvest 88







1State of Art in Pearl Gemology

11 GENERAL INRODUCION

A Pearl is a hard object produced within the soft tissue

(specifically the mantle) of a living shelled mollusk usually a

conch Just like the shell of a mollusk a pearl is made up of

calcium carbonate in minute crystalline form which has been

deposited in concentric layers Te ideal pearl is perfectly roundand smooth but many other shapes of pearls (eg baroque

pearls) occur Te finest quality natural pearls have been highly

valued as gemstones and objects of beauty for many centuries

and because of this the word pearl has become a metaphor for

something very rare fine admirable and valuable



2 Pearl Gemology amp Buying Guide

Te most valuable pearls occur spontaneously in the wild

but they are extremely rare Tese wild pearls are referred toas natural pearls Cultured or farmed pearls from pearl oysters

and freshwater mussels make up the majority of those that

are currently sold Imitation or fake pearls are also widely sold

in inexpensive jewelry but the quality of their iridescence is

usually very poor and generally speaking artificial pearls are

easily distinguished from genuine pearls Pearls have been

harvested and cultivated primarily for use in jewelry but in the past they were also stitched onto lavish clothing Pearls have

also been crushed and used in cosmetics medicines and in

paint formulations (Shells of Pearls)



State of Art in Pearl Gemology 3

12 HE HISORY OF PEARLS

121 Te 4000 Year History of Pearls

Pearls have been prized and collected for more than 4000 years

giving them the title of the worldrsquos oldest gem



P983141983137983154983148 G983141983149983151983148983151983143983161

983078

B983157983161983145983150983143 G983157983145983140983141

E983158983141983154983161983156983144983145983150983143 Y983151983157 N983141983141983140 T983151 K983150983151983159

A983138983151983157983156 P983141983137983154983148983155





P983141983137983154983148 G983141983149983151983148983151983143983161983078

B983157983161983145983150983143 G983157983145983140983141

By

Milad Darejeh

E983158983141983154983161983156983144983145983150983143 Y983151983157 N983141983141983140 983151 K983150983151983159

A983138983151983157983156 P983141983137983154983148983155



Notion Press




All Right Reserved

ISBN 978-93-83185-83-2







reviews



Contents




















vi Contents









33 Conch Pearls 28





421 Nacre 36


423 Surface 37

424 Shape 38

425 Color 38

426 Size 39





Contents vii

432 Nacre Value 40























viii Contents





























































P983141983137983154983148 G983141983149983151983148983151983143983161

983078

B983157983161983145983150983143 G983157983145983140983141

E983158983141983154983161983156983144983145983150983143 Y983151983157 N983141983141983140 T983151 K983150983151983159

A983138983151983157983156 P983141983137983154983148983155



Notion Press




All Right Reserved

ISBN 978-93-83185-83-2







reviews



Contents




















vi Contents









33 Conch Pearls 28





421 Nacre 36


423 Surface 37

424 Shape 38

425 Color 38

426 Size 39





Contents vii

432 Nacre Value 40























viii Contents





























































P983141983137983154983148 G983141983149983151983148983151983143983161

983078

B983157983161983145983150983143 G983157983145983140983141

E983158983141983154983161983156983144983145983150983143 Y983151983157 N983141983141983140 T983151 K983150983151983159

A983138983151983157983156 P983141983137983154983148983155



Contents




















vi Contents









33 Conch Pearls 28





421 Nacre 36


423 Surface 37

424 Shape 38

425 Color 38

426 Size 39





Contents vii

432 Nacre Value 40























viii Contents





























































P983141983137983154983148 G983141983149983151983148983151983143983161

983078

B983157983161983145983150983143 G983157983145983140983141

E983158983141983154983161983156983144983145983150983143 Y983151983157 N983141983141983140 T983151 K983150983151983159

A983138983151983157983156 P983141983137983154983148983155



vi Contents









33 Conch Pearls 28





421 Nacre 36


423 Surface 37

424 Shape 38

425 Color 38

426 Size 39





Contents vii

432 Nacre Value 40























viii Contents





























































P983141983137983154983148 G983141983149983151983148983151983143983161

983078

B983157983161983145983150983143 G983157983145983140983141

E983158983141983154983161983156983144983145983150983143 Y983151983157 N983141983141983140 T983151 K983150983151983159

A983138983151983157983156 P983141983137983154983148983155



Contents vii

432 Nacre Value 40























viii Contents





























































P983141983137983154983148 G983141983149983151983148983151983143983161

983078

B983157983161983145983150983143 G983157983145983140983141

E983158983141983154983161983156983144983145983150983143 Y983151983157 N983141983141983140 T983151 K983150983151983159

A983138983151983157983156 P983141983137983154983148983155



viii Contents





























































P983141983137983154983148 G983141983149983151983148983151983143983161

983078

B983157983161983145983150983143 G983157983145983140983141

E983158983141983154983161983156983144983145983150983143 Y983151983157 N983141983141983140 T983151 K983150983151983159

A983138983151983157983156 P983141983137983154983148983155








































P983141983137983154983148 G983141983149983151983148983151983143983161

983078

B983157983161983145983150983143 G983157983145983140983141

E983158983141983154983161983156983144983145983150983143 Y983151983157 N983141983141983140 T983151 K983150983151983159

A983138983151983157983156 P983141983137983154983148983155

pearl gemology &amp buying guide - a preview

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