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Diamond Advanced Tutorial by Emma Parker & Co. Chapter 3

Diamond Cut: The Basics - Understanding the technology
Chapter 3

To understand different measurements, tests, assessments and the diamonds are subjected to, and what the test results mean for the visual performance of diamonds, he must first have a solid grip on the technologies and techniques used to collect these data.

There are many different tools that are used by gemologists and diamond graders to determine the facts about a diamond properties. This section will focus primarily on tools more complex and less well understood, and will also focus primarily on tools used to determine the performance and reduce light.

Non-Contact Scanner

The Sarin machine is the most popular device in a small group of machines called "measuring devices without contact ". These tools are essentially scanners that analyze the outer surface of the diamond and measure all flat surfaces of the stone. They do this by taking many two-dimensional images of the silhouette of the diamond, and these images build a 3D model of the diamond, with measures that can be manipulated by the gemologist. Basically, the Sarin is able to reconstruct the diamond in a virtual world with extreme precision.

This is extremely useful for obtain measurements on the diamond, the examination of the cut diamond to determine the angles, and more. In addition, the software is capable of simulating light sources, allowing the gemologist to submit the model of diamond with different types of light, different strengths and different (single or multiple) angles, and more. This allows the diamond to be analyzed scientifically in a completely virtual world with amazing precision. Data from This analysis is very useful for determining the quality of cut diamonds, and therefore its ability to reflect light.

Sarin scanners are similar to the scanner and the scanner helium OGI. Emma Parker & Co., we use Sarin.

Features reflector

A simple but important tool that is used for the study and criticism of a diamond cutting and performance light are the "reflector devices" and the best known of these devices is called the scope ideal.

The principle of these tools is very simple, they show the light that is reflected by the diamond in a form that is visible to the human eye. This allows a person to observe "a return of light" or "light leakage" in a diamond easily.

After reading the Emma Parker Diamond & Co. tutorial, you should have a good understanding of the function of the ideal scope and other devices such as ASET AGSL reflector. If you have not read Emma Parker & Co. Diamond Tutorial, please stop here and read in its entirety before proceeding, as will be necessary to understand the next chapters of this tutorial.

DiamCalc Software

The DiamCalc software is a wonderful program that is designed to take the diamond patterns that are generated by a "non-contact measurement device" and set visible in a model that can be manipulated in a variety of conditions, angles, lighting, and so on.

It may even take models and simulate diamonds under "reflector devices" as the most Ideal Scope, ASET, FireScope, and. This program is capable of "Skin" diamond, if you want, with a visual aspect that is very similar to the real diamond.

A key feature of this program is that it allows the user to enter parameters for the diamond. For example, if we know that the diamond with the proportion Series 1 looks good, but we want to see what would happen if the table was of a different size, we can change the table into the program and see the effects of this change on the diamond, both visually and by a reflector device. This is an incredibly powerful tool for research and demonstration.

GEMEX BrillianceScope

The BrillianceScope was designed to measure the performance of light / optical performance a diamond in direct sunlight. The technology is actually quite simple and logical design.

Take a look at Figure 3.1

Figure 3.1

This is a block diagram of the internal workings of the BrillianceScope GEMEX. The diamond is on a circular piece of glass. The lid on the diamond is then closed, creating a completely white environment surrounding the diamond. (See Figure 3.2

Figure 3.2

Courtesy of GEMEX

Light generated by a fiber optic light is then projected upward through an opening in the half-white sphere, through the window at the top of the diamond, as shown in Figure 3.1.

Light travels at 5 specific sets of three points, briefly stopping at each of 15 points. For each set of points a camera at the bottom of the machine, which is through the center of the ring light, exhibits a triple image of the diamond, an image at each point the overall "flat" on top of each other, so to speak.

Once these images are captured and stored, the software breaks down each image on a pixel by pixel, and focuses on three distinct elements.

1. The amount of white light that is reflected by the stone. That counts for luminosity or brightness to the naked eye of the beholder.

2. The amount of colored light that is reflected by the stone. That counts for the fire or rainbow-colored light to the naked eye viewer.

3. The "movement" of light in the diamond, otherwise known as scintillation. This will be considered like sparkle to the naked eye of the beholder.

These results are then compiled and compared to a database controlled diamonds that have been tested on the machine, and the results of these tests are the basis for the "classification by comparison" system used by the software GEMEX. The result is a report like that shown below.

Figure 3.3

Courtesy of GEMEX.

The report's findings GEMEX, shown above in Figure 3.3, strongly curved, which means either that the bottom of the table in mid-encompassing "HIGH" grade up to the 85th percentile of all diamonds tested, while the grades from the middle of the "HIGH" marks the end of the scale "Very high" include the 86th - percentile of the 100th anniversary of the diamonds tested.

The GEMEX is an interesting tool, and is useful for a point to get a perception of how a diamond will occur under conditions of direct light, such as direct sunlight, highlighting Direct, etc.

The GEMEX is limited by the fact that his results apply only to direct light, and that his "classification by comparison "system is a completely subjective ranking system which by its nature, will always be subject to influences which have affected the results of block the control group on the basis of which any ranking is based schematic.

Another disadvantage of GEMEX is that the results can be manipulated by a user with a bit tricky. Something as simple as placing a spot of fingerprints on the top of the diamond can cause many side higher performance of white light that the stone would have if it was totally clean. Meticulous cleaning of the diamond and the glass is absolutely necessary to ensure a good scan. GEMEX inspects each scan before a report is issued and dismissed reports that show excessive dirt or smudges, but the ease with which the results can be manipulated is a draw back in our opinion.

Having a huge amount of experience with BrillianceScope GEMEX, both as a sales tool and as an analytical tool, I think technology is the expansion of its, and the validity of results. I also found that consumers place importance on the relationship too much, and often find themselves crippled with "analysis paralysis" and the fear they should be waiting for a diamond "10, the perfect" scores on the BrillianceScope, while leaving the world class diamonds on a technicality from a subjective, computerized, "ranking by comparison" system. It's silly and should be avoided. It is important to consider all aspects of a performance when buying a diamond stone. To do this, consider a full body analysis, BrillianceScope which is information, even non-essential part.

ISEE2

Figure 3.4

Courtesy of ISEE2 Diamonds

The machine ISEE2 is another technology that measures a diamonds Brilliance, Fire, scintillation and symmetry in a bright monitored using light scattered mainly. The inventor states that the machine ISEE2 subjects diamonds at 48 different conditions lighting. The ISEE2 takes 15 frames per second, and analyzes these images to analyze the break white light, colored light, bright Movement (Scintillation), and optical symmetry (model cut in stone, in this case, the machine is looking for the heart and style of arrows is usually displayed in a well cut 57 facets, traditional round diamond pattern).

After the widely used ISEE2 machine for both the sale and analysis of diamonds, I can say that the results of ISEE2 are compatible with other technologies, and are valid for consideration, provided they are not overly weighted by a consumer to make a decision.

As for BrillianceScope, the scoring system used the software is proprietary and unknown to anyone other than the developer. As for BrillianceScope, it would not normally cause for concern that the results were in connection with measures for scientifically established "ideal light performance," except for a essential information, the machine ISEE2 was developed by the diamond manufacturer ISEE2 specifically for sales and marketing their own brand ISEE2 Diamond, which is a facet 57 Ideal Cut Hearts and Arrows Diamond.

This fact does not invalidate the ISEE2 as a technology, or transfer its findings as null, it throws a shadow of doubt rebuttable on technology that has tested positive in laboratory tests with both private ISEE2 diamonds and non-diamond ISEE2. The problem lies in the subjective "ranking compared" standard that is used by the software, which is the owner and therefore not noticeable by consumers. Until now, independent tests, including my own extensive use of ISEE2 suggests that the classification put forward this technology is compatible and relatively accurate compared to the current position with regard to cut, major gemological laboratories such as GIA and AGS.

As with the scope Brilliance, the ISEE2 is an interesting example, but non-essential source of information that can be considered when buying a diamond. The greatest danger posed by this technology is too much emphasis is often placed by consumers on the importance results.

GIA Diamond Dock

Figure 3.5

Courtesy of GIA

The GIA Diamond Dock is a light source that is used to evaluate diamonds. (Figure 3.5) The lighting environment is intended to simulate real "Daylight" as closely as possible. Using a combination of diffused fluorescent lighting and LED lighting direct it is capable of simulating daylight with sufficient accuracy.

This is very useful for observation, photography, and the "naked eye" performance analysis of light from a diamond.

The Dock also doubles as a diamond color grading environment.

TECHNOLOGIES THAT DO NOT PRETAIN to "cut GRADE ANALYSIS"

Triplet Loupe Jeweler traditional

Figure 3.6

Courtesy Kassoy.com

A traditional jewelers "Triplet" lens is a simple tool that you find in almost any any good jewelry store. This is a simple, objective hand magnifier that allows a viewer to inspect the diamond under magnification easily and in almost any location and situation. The standard for these loupes magnification is 10x, however, different lenses are available for 20x and 30x as well.

This particular type of lens is designated as a "triplet" because the lens is actually composed of three different lenses to provide the highest clarity for the viewer.

Initially, using a magnifying glass can be difficult, but with a little practice, you can collect a large amount of information on a diamond simply by taking a good long look at her through a magnifying glass.

Microscope "High Power High-Definition Camera

Figure 3.7

Courtesy Kassoy.com

A good source of high magnification is essential for good analysis a diamond. While observing a diamond through a 10x loupe triplet is good, having the ability to zoom 50x or 60x magnification allows a jeweler to learn more on diamond and its imperfections, and his cup. In addition, the opportunity to share this information with a client is essential to ensure that the customer feels confident in diamond, they seek to buy.

At Emma Parker & Co., we use the microscope picture above. This is a magnification of 50x microscope, with glass lenses made by Leica, a leader in the industry of optical glass. The microscope also has a camera HD mounted on it, through which images of the inclusions can be taken, and live video can be streamed larger diamond.

Photographs taken by this microscope allow customers to see, in remarkable detail the characteristics of the larger diamond. See examples below ...

Figure 3.8

Red arrows indicate the "class inclusion" in the diamond. These are the shortcomings that have contributed to the purity of diamonds, given by the laboratory classification, such as the GIA or AGS.

Emma Parker & Co., we report these inclusions with arrows red in a photograph taken through a microscope so that our customers can easily find incus in their diamonds.

Colorimeter

Figure 3.9

Courtesy of Kassoy.com

In advanced countries today on the market technologically advanced and precise tools have emerged for determining the color of a diamond. The tools, called colorimeters "increased to such an extent that they are sufficiently precise and sophisticated. These machines are incredibly expensive, and are not used by everyone in the industry.

Like many of our colleagues, we here at Emma Parker & Co. prefer the old way of classifying the colors, the way the GIA and AGS always use quality diamonds, white tea, a light color grading, and a set of master stones.

We believe that certain things are best left to the human eye and observation training.

Written by Timothy Andrew, Emma Parker & Co. www.emmaparkerdiamonds.com

About the Author

I am a person who is passionate about diamonds...I suppose that is why they are my profession. I am also a non-practicing lawyer, which makes for an interesting combination. As the President of Emma Parker & Co. I get to help people through the wonderful and joyous process of selecting gifts for people that they love. I absolutely love what I do, and would never, by choice, do anything else.

Personally, I love to ski, play baseball, and spend time with my family.

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