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- Herausgeber: RWG Publishing
- Kategorie: Lebensstil
- Sprache: Englisch
Over the years J. Steele has worked with some of the best gems God’s earth has to offer. He has now put this guide book together for all to use. This is a simple informative guide book. Buying colour gems is a challenge. Written for both consumers and professionals, it is easy to read, has colour photographs and gives practical pointers on how to decipher the differences. Whether you are interested in jade, opal, ruby, topaz, spinel, garnet, tourmaline or some other coloured gem, you will find this guide to be a fascinating and valuable resource.
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Veröffentlichungsjahr: 2022
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Gemstone Guide Book
A Simple Informative Handbook
J. Steele
Gemstone Guide Book Copyright © 2015 by J. Steele. All rights reserved.
No part of this publication may be reproduced, stored in a retrieval system or transmitted in any way by any means, electronic, mechanical, photocopy, recording or otherwise without the prior permission of the author except as provided by USA copyright law.
Published By
Revival Waves of Glory Books & Publishing
PO Box 596
Litchfield, IL 62056
Revival Waves of Glory Books & Publishing is committed to excellence in the publishing industry.
Published in the United States of America
eBook: 978-1-312-79541-9
Paperback: 978-1505865370
E-Book Distribution: XinXiiwww.xinxii.com
Introduction
Over the years J. Steele has worked with some of the best gems God’s earth has to offer. He has now put this guide book together for all to use. This is a simple informative guide book. Buying colour gems is a challenge. Written for both consumers and professionals, it is easy to read, has colour photographs and gives practical pointers on how to decipher the differences. Whether you are interested in jade, opal, ruby, topaz, spinel, garnet, tourmaline or some other coloured gem, you will find this guide to be a fascinating and valuable resource.
ALEXANDRITE
Alexandrite is a variety of chrysoberyl that displays a colour change depending on light conditions and the angle it is view from (pleochroism).The ideal colour change would be fine emerald green to fine purplish red, but this is rare and expensive. Alexandrite was discovered in the Ural Mountains of Russia in the 1830's, and named after tsaravitch Alexander, the future tsar. That area was mined for over 60 years and still today Russian Alexandrite is considered the best quality. Today, small quantities of Alexandrite are mined in Brazil, Sri Lanka, India, Myanmar, Tanzania and Zimbabwe.
Colour: Green in daylight and red-violet in incandescent light.
Hardness: 8.5
AMBER
Amber is the fossilized resin from ancient forests. In ancient times the resin dripped and oozed down trees, filling fissures and trapping debris such as seeds, leaves, feathers and insects. The resin then became buried and fossilized through a natural polymerisation creating amber. The two main sources of amber in today's market are the Baltic states and the Dominican Republic. Amber from the Baltic states is older than that from the Dominican Republic is more likely to have insect inclusions. Most of the world's amber is in the range of 30-90 million years old. Semi-fossilized resin or sub-fossil amber is called copal.
Hardness: 2.5-3
AMETHYST
Amethyst is a transparent purple quartz. Origin of name from the Greek -amethystos- "not drunken". Amethyst was considered to be a strong antidote against drunkenness. Greek legend tells the story of a maiden Amethystos who was pursued a drunken god called Dionysus. She prayed to the goddess Artemis to remain chaste. The goddess granted her prayer, transforming her into a white stone. Filled with remorse Dionysus cried tears of wine over the stone turning it purple.
Different localities can produce a unique amethyst to that particular region or even to that particular mine. It is mined in Brazil, Uruguay, Bolivia and Argentina, Zambia, Namibia and other African countries. Very dark amethyst, mostly in small sizes, is also mined in Australia.
Colour: the colour range varies from pale lilac to deep purple.
Hardness:7
AQUAMARINE
Aquamarine belongs to the gemstone family of Beryls. Origin of name Latin "aqua"meaning water and "mar"sea. Legend has it that Mermaids tails were made of aquamarine. Aquamarine is usually free of inclusions and possesses a superior brilliance. The more intense the colour of an Aquamarine, the higher its value.The principle supply of aquamarine stones comes from Brazil, Russia, Afghanistan, India and PakistanColour:pale blue to light greenish
Hardness: 7.5-8
BLOODSTONE/ HELIOTROPE
Bloodstone or heliotrope, is a form of Chalcedony, a cryptocrystalline quartz. Bloodstone is green jasper with red inclusions. The red is sometimes caused by iron oxide or red jasper. Origin of name: From the red spots looking like spots of blood. It is usually cut "en cabochon" (that is shaped and polished usually with a flat bottom and a convex top) or into beads, it is used as a sealstone and in signet rings. Bloodstone is found in Australia, Brazil, China, India and the USA (Wyoming).
Colour: green with red inclusions
Hardness: 7
