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AN INTRODUCTION TO GEMOLOGY...Gemology is the study of gemstones. Some dictionaries define it as the "scientific study of gemstones," but it is almost impossible to remove the scientific element. There may be investors whose only interest is in the value of the stones, but if they ever need to distinguish one gem from another, they are dealing with science. ... There are many categories of gemologists. For the jeweler it is a key element of their business. They need to be able to answer their customer's questions and identify the gems brought into them. ... The gold smith needs specific knowledge about the physical characteristics of gems. A setting that would be ideal for a diamond would be inappropriate for an opal and vice versa. The amount of pressure used to set the prongs on a garnet would break a tanzanite. ... Some gems will withstand the heat of repair work that involves high temperature soldering. Some can be left in the setting if steps are taken to moderate the amount of heat they receive. Still others are so heat sensitive they need to be removed. ... The lapidary also needs special knowledge. Cutting and polishing techniques vary from gem to gem. What would work well for one material would be a waste of time on another and disastrous on something else. ... When faceting thought needs to be given to color management. How the rough is oriented can make a lot of difference in the appearance of the finished gem. The style of cutting is also a part of color management. The choice of cut can lighten or darken a gem which will have considerable effect in both the appearance and the value of the stone. ... The choice of a cut, which includes the shape, number and location of facets, also influences the brilliance of the gem. The angles the facets are cut at have to be carefully chosen. Then these factors are balanced, or compromises made, so as to not sacrifice too much material in the pursuit of beauty. ... Another category of gemologist are the scientists. These are people with degrees in geology, chemistry and sometimes physics. While one of the smallest categories of gemologists, they are at the same time one of the most influential. ... At the heart of gemology is gem identification. Some rubies and garnets are impossible to tell apart from each other by observation, but their values are considerably different. A precise and accurate means to tell them apart is absolutely necessary. ... When dealing with whole crystals, the ruby and garnet are easy to distinguish. Garnets form in the cubic system. While they vary in shape, they tend to be roundish and the number of sides is always a multiple of four. Rubies on the other hand, form long thin crystals. They are in the hexagonal system and always have six sides. ... Most of the material that gets cut into gems isn't found in whole crystals, but in broken pieces. Using the techniques of mineralogy, they are easily distinguished from each other. Scratch tests, where the unknown is scratched by various substances, will determine its hardness. Other useful tests are the reaction to acids and the flame of a blow torch. These are categorized as destructive tests and are obviously inappropriate for cut gems. ... For centuries it was the lapidary who was in a position to most easily recognize the differences in like appearing gems. During the cutting process gems get viewed intently, a perspective that no other gemologist has. Identifying inclusions are given a lot of attention, then as many as possible removed. Differences in hardness are readily apparent when cutting and polishing, as are other characteristics. ... A method needed to be devised where cut gems could be identified without damage. To this end scientists began to first, identify the measurable physical and optical properties of our gems. Next they devised instruments to measure these properties. There was a long process of systematically measuring and recording these properties so they could be looked up. (Though well established, this is actually an ongoing process.) Eventually all this got put together into methods that could be used by people without extensive scientific backgrounds or large and expensive laboratory equipment. ... That is not to say that it doesn't require substantial education to identify gems. It is a large and complex subject that is continuing to increase in complexity as new gems are discovered and new ones are created in the laboratory. However, one doesn't need a degree in chemistry or physics to simply measure the properties of our gems. The most esoteric part was discovering those properties and creating the tools to measure them. ... If you are interested in learning about gems the first step would be to learn how they are categorized. Also important in the early stages is learning the terminology used to describe gems. Next you can learn what the physical and optical properties are. When you have this background, you can get into gem identification. ... Of course there are many side roads to travel. You may find a fascination with phenomenal gems or their inclusions. Many people find a desire to collect gems and this often leads to making jewelry or learning how to cut gems. ... Whether your interest is casual or professional, there is much to delight and amaze. It is something you can do from your desk, or something that allows you to get your hands dirty. Plus the subject of gemology is one of those where you will never run out of new elements to discover.
What else can I help you with?
What is cutting and polishing of gemstones called?
Yes, the art of cutting gems is known as Lapidary. In the trade Lapidarists are generally referred to as 'cutters'.
Why is luster can be determined simply by observation?
Luster can be determined by observation because it refers to the way a surface reflects light, which is visually perceptible. Different materials exhibit varying degrees of shine, ranging from metallic and glassy to dull or matte finishes, making it easy to categorize them based on appearance. This property is evident without the need for complex tools, allowing for quick visual assessments in mineralogy and gemology. Consequently, luster serves as a fundamental characteristic for identifying and distinguishing materials.
Is gemstones part of chemistry?
Gemstones are not directly part of the field of chemistry. However, the study of gemstones often involves understanding their chemical composition and properties, which does involve some aspects of chemistry. Gemology, the scientific study of gemstones, incorporates various disciplines such as mineralogy, geology, physics, and chemistry. Chemistry plays a role in analyzing and identifying gemstones by examining their elemental composition and crystal structure. Techniques such as spectroscopy, X-ray diffraction, and electron microscopy are employed to determine the chemical composition and atomic arrangement within gemstones. Understanding the chemistry of gemstones helps gemologists assess their authenticity, origin, and quality. Furthermore, some gemstones derive their color from impurities or defects in their crystal lattice, which can be attributed to specific chemical elements or compounds. For instance, the presence of chromium gives emeralds their green color, while traces of iron contribute to the blue color of sapphires. In summary, while gemstones themselves are not a core component of chemistry, the study of gemstones incorporates chemical analysis and understanding to comprehend their composition, structure, and properties.
What is topaz flourescence?
Topaz fluorescence refers to the phenomenon where topaz gemstones emit visible light when exposed to ultraviolet (UV) light. This fluorescence can vary in intensity and color depending on the presence of trace elements within the crystal structure, with some topaz displaying bright blue or yellow hues under UV light. It's a sought-after characteristic in gemology, as it can enhance a stone's appeal and indicate its quality. However, not all topaz exhibits fluorescence, making it a unique feature for certain specimens.
Are Russian diamonds real diamonds or not?
There are "Russian diamonds" - is the company/website name and it offer diamond simulants, not real diamonds. And there are Russian diamonds which is produced in Russian labs which are 100% real diamonds. To ensure the diamond is real ask for independent gemology certificate: GIA, EGL, IGI.
Where could a person study Gemology?
There are quite a few reputable institutes where one can study Gemology, both in India and abroad. A friend of mine is currently pursuing a gemology course at the IIG South, and they’ve been sharing how comprehensive and hands-on the training the course is.
What does TGW mean in gemology?
Total Gross Weight
Who is the father of Gemology?
The Father of Modern Gemology is said to be Richard T. Liddicoat who was the Architect of the international diamond grading systen, who created gem testing, affordable instruments, and with the driving force of 60 years reaching out to the world through books, publications, and a library making his the Father of Modern Gemology
Gemology meaning of this word please?
Gemology is the study of gems. -ology on the end of any word means "the study of." So, for example, theology is the study of God, biology is the study of life, etc.
Is gemology a branch of physics?
no.gemology is a subject different from physics.you can learn the structure of a lot gems .something like the geoscience.but physics you have to do a lot caculation .they both include the study of crystal .
What is the study of diamonds and other stones?
The study of diamonds and other gemstones is known as gemology. Gemology involves identifying, grading, and evaluating the characteristics of gemstones, including their color, clarity, cut, and carat weight. Gemologists often use specialized tools and techniques to assess and authenticate gemstones.
Is 50 cents diamond a solitaire?
Yes, in the field of gemology solitaire starts from 18 cents...
What is study of stones called?
If I understand your question you mean geology.
What are the good gadget combinations in jetpack joyride?
I'm using gemology and the coin magnet for more money.
How do you spell gemmology?
The spelling gemmology is one variant of the word, secondary to gemology (the study of gems).
What is the significance of the 444 fire diamond in the context of gemology and jewelry design?
The 444 fire diamond is significant in gemology and jewelry design because it is a rare and highly valued type of diamond known for its exceptional brilliance and fire, which refers to the way it reflects light and sparkles. This makes it a sought-after choice for creating stunning and luxurious jewelry pieces.
What has the author Robert M Shipley written?
Robert M. Shipley has written: 'Dictionary of gems and gemology' -- subject(s): Dictionaries, Precious stones
