Author: Keal Sinclair Byrne
Publisher:
ISBN:
Category :
Languages : en
Pages :

View

Book Description
[Truncated abstract] Diamond defect centres are becoming increasingly important in many fields of scientific research, yet only a few are understood to any great degree. This is particularly the case for natural diamond, in which there are many colour centres whose nature is still a mystery. This thesis focuses on one such centre: that responsible for inducing pink colouration in natural diamonds from the Argyle mine, Western Australia. This "pink colour centre" has not yet been identified, and its properties are little understood. Identification and characterisation of this defect centre has high commercial value for three distinct reasons. Firstly, as natural pink diamond is amongst the rarest and most valuable of coloured diamonds, the identification of the pink colour centre may make possible synthesis of diamonds with the same properties. Secondly, the market value of a pink diamond is predicated on the strength of its colouration. However, pink diamonds are known to demonstrate a loss of colour in certain circumstances. An analysis of the pink colour centre's optical properties will be of use in understanding this colour instability. Thirdly, given the large variety of scientific uses that diamond centres have so far found, the characterisation of this defect may very well reveal technical applications for which N-V and other defects are not suitable. This thesis describes a series of novel experiments, which have provided new insight into the electronic and physical structure of the Argyle pink diamond colour centre, and its relationship with other naturally-occurring diamond defects. The first set of experiments in this thesis focuses on the photochromism of pink diamond. The characteristic pink diamond absorption bands at 550 nm and 390 nm show a photochromic response to visible and UV light, which is long-lived at room temperature. We present a series of experiments and a related theoretical model to describe this phenomenon.

Author: Inga A. Dobrinets
Publisher: Springer Science & Business Media
ISBN: 3642374905
Category : Science
Languages : en
Pages : 270

View

Book Description
High-temperature and high-pressure treatment of diamond is becoming an important technology to elaborate diamonds. This is the first book providing a comprehensive review of the properties of HPHT-treated diamonds, based on the analysis of published data and the work of the authors. The book gives a detailed analysis of the physics of transformation of internal structures of diamonds subjected to HPHT treatment and discusses how these transformations can be detected using methods of optical microscopy and spectroscopy. It also gives practical recommendations for the recognition of HPHT-treated diamonds. The book is written in a language and terms which can be understood by a broad audience of physicists, mineralogists and gemologists.

Author: Amanda S. Barnard
Publisher: Butterworth-Heinemann
ISBN: 9780750642446
Category : Science
Languages : en
Pages : 182

View

Book Description
Provides a gemmologist, gemmological (or mineralogical) student, or interested party with an overview of the synthesis of diamonds. This book begins with the history of diamond synthesis, and the theories on which much of the early work was based, before discussing the principles on which the modern processes rely.

Author: A.M. Zaitsev
Publisher: Springer Science & Business Media
ISBN: 3662045486
Category : Science
Languages : en
Pages : 508

View

Book Description
This handbook is the most comprehensive compilation of data on the optical properties of diamond ever written. It presents a multitude of data previously for the first time in English. The author provides quick access to the most comprehensive information on all aspects of the field.

Author: Karen Smit
Publisher: Walter de Gruyter GmbH & Co KG
ISBN: 150151704X
Category : Science
Languages : en
Pages : 898

View

Book Description
Diamond is the record-setter in many mineralogical properties such as hardness, diffusivity, thermal conductivity, purity, and covalency of bonding. Similarly, diamond, as the premier gemstone of the mantle holds primacy for geological features such as age and depth of origin. Diamond was among the first crystalline structures to be solved by X-ray diffraction and the first materials measured for their Raman spectrum. At more than 80 billion USD in yearly commercial value, diamond sets the record for the most traded, valuable mineral on the planet. Despite its chemical simplicity, diamond has been the object of more research effort, and had more scientific and popular press pages written about it, than any other mineral.

Author: H.C Hannah
Publisher: eBook Partnership
ISBN: 1912924684
Category : Fiction
Languages : en
Pages : 481

View

Book Description
September 1995. A woman's body is found on the beach of an exclusive Caribbean resort, brutally murdered. A ten million dollar diamond necklace mysteriously disappears and the guests at the resort are evacuated as Hurricane Luis advances from the Atlantic. One of the guests is fifteen year old Alicia Clayton. Evidence from the crime scene is swept away by the hurricane and the body goes missing on the way to the mortuary. The perfect murder. No one is convicted. The case is never closed. The killer walks free.Twenty years later, a diamond necklace shows up at a Hatton Garden jewellery store. It bears a striking resemblance to the original necklace. Alicia, now an investigative journalist, is compelled to return to the abandoned resort and the scene of the murder. Someone is using her to lure the killer out into the open...

Author: George E. Harlow
Publisher: Cambridge University Press
ISBN: 9780521629355
Category : Nature
Languages : en
Pages : 294

View

Book Description
The paragon of physical perfection and a sparkling example of Earth's forces at work, the diamond has fascinated all realms of society, from Russian tsars and Hollywood stars to scientists and brides-to-be. The Nature of Diamonds is an authoritative and richly illustrated look at nature's most coveted gem. Leading geologists, gemologists, physicists, and cultural observers cover every facet of the stone, from its formation in the depths of the Earth and its explosive ascent to the surface, to its economic, regal, social, and technological roles. The book takes the reader to cutting-edge research on the frontiers of diamond exploration and exploitation, from Arctic wastes to laboratories that create industrial diamonds for cutting tools that slice through rock. Charting the history of mining from its origins in India and Brazil, the book follows the diamond rush in South Africa to today's high-tech enterprises. It provides a glimpse into the economics of the diamond trade, and an overview of diamond cutting, from the rough uncut stones in early Indian and Roman jewelry to the multifaceted stones we see today. The cultural history of the diamond as both a revered and a social symbol is explored, from its early history as the exclusive property of royalty to today's brilliant-laden jewelry as an emblem of wealth and status. The engaging text is complemented by more than 200 lavish illustrations which span fine art, earth science, and cultural studies and capture the brilliance and beauty of this extraordinary gem.

Author: Società italiana di fisica
Publisher: IOS Press
ISBN: 1614992207
Category : Science
Languages : en
Pages : 635

View

Book Description
Diamond is an extreme material among possible atomic aggregations in nature, and as such has many extreme properties. This unique position makes it a fascinating subject both for science and for applications. This has been particularly true in recent years, since the surprising discovery at Union Carbide (1953) of the possibility of chemical vapour deposition of diamond films at low pressures, where diamond is metastable with respect to graphite. This discovery cleared the way to the development of economical deposition techniques that have been obtaining progressively better-quality diamond, both pure and doped, in a controlled way and for a variety of applications. The remarkable properties and applications range from mechanical (the extreme hardness, tensile and compressive strength, wear performance) to thermal (the highest conductivity), optical (wide range of transparency), chemical (inertness to most chemicals), biological (biocompatibility) and electronic (high electronic carrier mobility, large band gap and dielectric breakdown strength, negative electron affinity), with the simultaneous presence of so many extraordinary qualities often resulting in added value for a given application.We are presently at a turning point in the development of diamond physics and applications. While some achievements can be considered well established, on the other hand, new opportunities and challenges are facing the scientific community, particularly with regard to novel exciting deposition processes and techniques or new properties and applications in electronics. This Enrico Fermi Course on "The Physics of Diamond" is particularly focused on the new developments and prospects, which may well constitute a reference point for a new generation of scientists at what may possibly be the beginning of a new age in diamond. The course attracted several of the most distinguished experts in the field as lecturers and an audience of almost as distinguished students and observers from 19 countries. Participation and discussions were lively to the very last day, ranging from traditional diamond physics to new diamond physics, and from well-known applications to the new exciting opportunities.The material in this volume is organized in the following way: the first part (13 lectures) is essentially devoted to growth and structure, the second part to properties and applications, with a closing lecture exploring new exotic diamonds in the distant future. The earlier lectures extensively cover the many processes of plasma chemical vapour deposition, including advanced contributions in theoretical modelling of these processes. Novel deposition mechanisms are considered: low-temperature CVD and laser-activated processes, including the so-called QQC experiments. This first part closes with a discussion of amorphous phases. In the second part, particular emphasis is placed on electronic properties and applications. This includes an extensive discussion of doping and, in addition, the promising perspectives of diamond as an electron emitter. Its newly discovered remarkable electron affinity properties lead to a new dimension in research and development, of great strategical importance for an increasing role of diamond in electronics.

Author: Fred Cuellar
Publisher: Sourcebooks, Inc.
ISBN: 1402267347
Category : Reference
Languages : en
Pages : 395

View

Book Description
"Finally, one of the top diamond experts breaks the silence and demystifies the world of diamonds for regular folks like you and me."-Gregory J.P. Godek, author of 1001 Ways to Be Romantic Get Your Money's Worth on a Great Diamond! Buying a diamond can be one of the most important and intimidating purchases you ever make. Whether you're getting engaged or married, or are buying for an anniversary, investment, or just because, How to Buy a Diamond will take the pressure and uncertainty out of your purchase, and will show you how to get the best diamond for your money. Newly revised and completely updated, How to Buy a Diamond is the only book on the market to include wholesalers' secret pricing charts athat you, the public, never get to see. The charts are broken down by carat, clarity, and color-including the various types of color within each color grade. Important sections include: - Matching your funds with the perfect diamond - The four C's explained: clarity, color, cut and carat size - Ring styles and settings - Insuring and caring for your diamond - Picking the right jeweler - Grade bumping: what it is and how to spot it - Surprising new changes to guild stores - Jewelers' tricks of the trade - Wholesalers' secret pricing charts!

Author: Howell Edwards
Publisher: Royal Society of Chemistry
ISBN: 1782626247
Category : Science
Languages : en
Pages : 594

View

Book Description
Analytical Archaeometry describes this interesting and challenging field of research - on the border between natural sciences (chemistry, spectroscopy, biology, geology) and humanities (archaeology, (art-)history, conservation sciences). It fills the gap between these two areas whilst focussing on the analytical aspects of this research field. The first part of the book studies the main analytical techniques used in this research field. The second part expands from the different types of materials usually encountered, and the final part is organised around a series of typical research questions. The book is not only focussed on archaeological materials, but is also accessible to a broader lay audience. Overall the book is clearly structured and gives insight into different approaches to the study of analytical providing extensive discussion on a wide range of techniques, materials, questions and applications. Due to the advances in analytical instrumentation and applications in this field, it is important to have all this information merged together. Academics as well as professionals in archaeology, art history, museum labs and conservation science will find this an invaluable reference source ensuring the reader is provided with the latest progress in this research field.