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The Pearl Book 4 E

Author: Antoinette Leonard Matlins
Publisher: Gemstone Press
ISBN: 9781683364139
Size: 48.36 MB
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For people who want a reliable source of information to guide them in the fascinating and complex world of pearls natural, cultured and imitation."

The Pearl Book

Author: Antoinette L. Matlins
Publisher: Gemstone Press
ISBN: 0943763355
Size: 43.55 MB
Format: PDF, ePub
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With today's finest cultured pearls rivaling diamond, ruby, emerald and sapphire in terms of popularity, rarity and price, more and more people are searching for a reliable source of information to guide them in the fascinating and complex world of pearls-natural, cultured and imitation. This revised and updated 3rd edition is a comprehensive, authoritative guide that tells readers everything they need to know about pearls to fully understand and appreciate them, and avoid any unexpected-and costly-disappointments, now and in future generations.

Gem Identification Made Easy

Author: Antoinette Leonard Matlins
Publisher: Gemstone Press
ISBN: 0943763592
Size: 73.78 MB
Format: PDF
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This revised edition covers the latest gems, synthetics, treatments and instruments. It is easy to use, practical and non-technical indicating how to identify diamonds, coloured gemstones and pearls, as well as separating them from fakes and look-alikes. The book explains what instruments are needed and how to use them, where to obtain such instruments and what should be seen for each gemstone. Anyone can learn to identify most of the gems and imitations found in the market place. This volume is the key to avoiding costly mistakes and recognising profitable opportunities.

Goods And Services Of Marine Bivalves

Author: Aad C. Smaal
Publisher: Springer
ISBN: 3319967762
Size: 57.76 MB
Format: PDF, Mobi
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The aim of this book is to review and analyse the goods and services of bivalve shellfish. How they are defined, what determines the ecological functions that are the basis for the goods and services, what controversies in the use of goods and services exist, and what is needed for sustainable exploitation of bivalves from the perspective of the various stakeholders. The book is focused on the goods and services, and not on impacts of shellfish aquaculture on the benthic environment, or on threats like biotoxins; neither is it a shellfish culture handbook although it can be used in evaluating shellfish culture. The reviews and analysis are based on case studies that exemplify the concept, and show the strengths and weaknesses of the current applications. The multi-authored reviews cover ecological, economic and social aspects of bivalve goods and services. The book provides new insights for scientists, students, shellfish producers, policy advisors, nature conservationists and decision makers. This book is open access under the CC BY license.

The Pearl Oyster

Author: Paul Southgate
Publisher: Elsevier
ISBN: 9780080931777
Size: 15.28 MB
Format: PDF, Docs
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Contrary to a generally held view that pearls are found by chance in oysters, almost all are now produced from farms. This book is a comprehensive treatment of all aspects of the biology of pearl oysters, their anatomy, reproduction, genetics, diseases, etc. It considers how they are farmed from spawning and culturing larvae in hatcheries to adults in the ocean; how various environmental factors, including pollution affect them; and how modern techniques are successfully producing large numbers of cultured pearls. This is the ultimate reference source on pearl oysters and the culture of pearls, written and edited by a number of scientists who are world experts in their fields. •Comprehensive treatment of pearl oyster biology and pearl culture •Written by the top world authorities •Highly illustrated and figured •Of practical relevance to a broad readership, from professional biologists to those involved in the practicalities and practice of pearl production

Wetland Environments

Author: James S. Aber
Publisher: John Wiley & Sons
ISBN: 1118349539
Size: 55.72 MB
Format: PDF
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Wetlands - swamp, marsh, bayou, tundra and bog - are places thatare rarely visited and often misunderstood but they have, in fact,conspicuous roles in the physical, biological and culturalgeography of the world. They are intrinsically beautifulenvironments where one may see the natural and essential values inthe interaction of water, soil, vegetation, wildlife, andhumans. Wetlands occur at the confluence of uniqueterrestrial, hydrological and climatic conditions that give rise tosome of the most biodiverse regions of the world. They alsoplay vital roles in the cycling and storage of key nutrients,materials and energy through the Earth?s system. A complete study of wetland environments requires the assessmentof their physical and biological attributes, properties andfunctions of these ecosystems, and the economic, political andsocial aspects that mediate their use globally. A systemsapproach is taken throughout this book which emphasizes theinteractions between these elements of wetland ecosystems. Moreover, selected case studies from across the world are used toillustrate wetland characteristics and circumstances. This book is intended to foster a greater awareness andappreciation of wetlands, promote a culture of conservation andwise management, and spread the knowledge that wetlands areimportant, indeed crucial, elements of the globalenvironment. Our attempts to understand, manage and enhancewetlands in the twenty-first century are part of the larger effortto maintain a sustainable Earth. Readership: Introductory or intermediate levelundergraduates taking courses on wetland environments Additional resources for this book can be found at: ahref="http://www.wiley.com/go/aber/wetland"www.wiley.com/go/aber/wetland/a.

Jewelry Gems The Buying Guide

Author: Antoinette Leonard Matlins
Publisher: Gemstone Press
ISBN: 9780943763316
Size: 45.51 MB
Format: PDF, Kindle
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Purchasing gems and jewellery can be a magical experience, filled with excitement and anticipation. But lack of information, error, or misrepresentation can make the thrill of buying a gem or piece of jewellery confusing, intimidating, overwhelming, and costly. To help you to avoid the pitfalls and keep the magic, two internationally respected experts on buying gems and jewellery put their inside knowledge to work for you in this easy-to-read, easy-to-use guide. It is filled with practical advice and is designed to make it easy for you to have all the information you need to buy gems and jewellery with confidence.

Engagement Wedding Rings

Author: Antoinette Leonard Matlins
Publisher: Gemstone Press
ISBN:
Size: 59.89 MB
Format: PDF, ePub
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Until now, there has been no reliable source of information for buring engagement rings and wedding bands--which is the first major purchase a couple make and, next to buying a home, possible the most expensive.