A rounded diamond is possible
The earliest Greek authors did not understand this name as a precious stone, but rather a piece of metal of unbeatable hardness such as steel, compared with bronze from ancient times. It eventually became synonymous with the word diamond.
American Gem Society (AGS)
The AGS is the educational center for gemological studies. AGS laboratories were originally set up to develop and promote the generally accepted standards for grading abrasive quality.
Refers to diamonds found in rivers.
The Asscher Cut Diamond is a square emerald cut with deeper cut corners and 72 facets. The contemporary version of the Asscher diamond has more facets and the corners are less angular. The Asscher diamonds were created in 1902 by Abraham and Joseph Asscher of the Royal Asscher Diamond Company. The Asscher diamonds first became popular in the 1920's and have recently become popular again.
Bagamen is the name of a Brazilian diamond mine.
De Beers is the company that single-handedly built the diamond industry we know today. De Beers was founded by Cecil Rhodes, the man who also founded the state of Rhodesia, later known as Zambia and Zimbabwe. The Rhodes Scholarship is also named after him and funded by that state.
Bezel is a facet on the crown or top of the diamond.
Denotes stones that are difficult to grind due to their complex crystal structure.
Name for the rock kimberlite found in the deep layers of the earth.
Impure, powdered diamonds of very poor quality that are used as abrasives.
A round diamond cut with at least 57 facets with the required proportions. This cut shape has an optimal degree of gloss and light reflection.
Brilliance refers to the brightness that comes from the heart of the diamond. It is this effect that makes diamonds unique among all precious diamonds. Although other gemstones also exude brilliance, these will never have the power to match the light-reflecting power of the diamond. Brilliance occurs when light shines through the diamond, hits the facets and then reflects back from the diamond (where the light becomes visible to our eyes).
This is one of the three styles of facet grouping. In this way, all the facets appear to radiate from the center of the diamond to the outer edges. This is called a brilliant cut because it was designed to shimmer as much as possible. Round, oval, radiant, princesses, hearts, marquises, and pears all fall into this category of cut shapes.
A Brazilian premium diamond of excellent quality.
The culasse is the lower facet of a diamond. A small or medium culasse is the most beautiful. A large culasse lets light escape instead of reflecting it. If there is no culasse, the bottom of the diamond could break.
The depth of a diamond is measured from the bottom of the culasse.
The depth rate is the height of the diamond divided by the width. The depth is crucial for optimal brilliance. If the down rate is too low, the diamond could lose its brilliance.
A crystal that consists of 99.95% pure carbon atoms, arranged in an isometric or cubic crystal grouping. It is this unique arrangement of carbon atoms that makes diamonds look different from other pure carbon minerals like graphite (the soft black material used in pencils).
This is the method whereby a rough diamond, deminished from the earth, is processed into a finished stone with facets. The first step is cleavage, where the raw material is divided into smaller, malleable pieces that are made into separate gemstones. Then cut the edges so that the shape (e.g. heart, oval or round) is shaped for the stone. The facets are created in two steps: during the blocking, the most important facets - the table, the culasse, the cover and the pavilion - are cut. After that, the facets of the star, the upper and lower belts are added. Once the multi-faceted diamond has been checked and approved, it is boiled in hydrochloric and sulphuric acids to remove dust and oil.
This is a tool that measures diamond length, width and depth in millimeters.
The place reserved for members of the exchange for commercial transactions.
Around the table facet of the crown are several smaller facets (bezel and star facets) that are directed downwards to different degrees. These facets (and corners they are cut on) are expertly designed to break the white light as it hits the ground below, splitting it into rays (e.g. red, blue, or green). This effect, which looks like a play of tiny flashes of color that come from diamonds when it is tilted, is the dispersion of the diamond (also called fire). This play of colors cannot be confused with the natural color of the diamond (usually white, but also often brown, yellow, pink or blue). The diamond makes the uniform uniform and constant.
Originally developed for emeralds. The emerald-cut diamond has a reinforced cut and is striking because of its long lines - and greater transparency and less fire. It is often used in men's jewelry and can be made either square or rectangular. The corners of the emerald cut are usually cut off or flattened to protect them. Since it is not as fiery as a diamond, it is generally important to choose a diamond of higher quality - as defects are usually more noticeable.
Some loop shape
This is a very small round diamond with only 16 or 17 facets as opposed to the normal 57 or 58 facets of a diamond ship. Some "cuts" are sometimes used for pavé jewelry and other jewels that also use several small shapes that are set close together.
Eye-clean, applies to stones up to purity grade SI2.
This means that the diamond has no visible inclusions that are visible to the naked eye.
Facets are the flutes that the effort grinds onto the diamond.
Fluorescence refers to the effect seen in some diamonds when exposed to UV light (e.g. the famous "black light" in the disco). Under most circumstances, this fluorescence is imperceptible to the naked eye. But if a diamond has natural fluorescence, it should give off a soft glow when held under UV light. Fluorescence has no effect on the quality of the diamond and contributes to the beautiful shine and color. It is a unique and fascinating attribute found in several gemstones and minerals.
Gemological Institute of America (GIA)
GIA was founded in 1931 by Roger Shipley. This is a non-profit association for the highest standards for diamonds and other precious stones. GIA is one of the most respected and well-known gemological laboratories in the world; GIA was responsible for the development and standardization of the diamond grading system, which is now used by virtually all other gemological laboratories.
The belt is the outside of the diamond shape. The belt is not graded but rather defined by its appearance on the thinnest and thickest point. The descriptions of belt thickness are classified as follows: extremely thin, thin medium, slightly thick, and extremely thick.
E.g. the shapes pear, heart or marquise can be sanded with extremely thick belts to protect your points (and in the heart) the delicate corners from damage. Most diamonds have soft belts that need to be modeled by the diamond cutter fairly early in the cutting process. In some cases, the grinders even go a step further and polish and buff the belt even further. In these cases you can choose to make a "smooth" or a "faceted" belt. In both cases, the difference between this and an ordinary belt is generally not visible to the naked eye. A polished or faceted belt does nothing to improve diamond quality. Most laboratories graduate the thickness of the belt rather than its appearance.
Heart diamond cuts are basically a pear shaped diamond with a crack in the top. One assumes a romantic cut for obvious reasons.
A purity attribute that is found within the diamond. Most inclusions occur when the stone is formed under the surface of the earth.
Inclusions are the internal imperfections in a diamond, such as a spot or other imperfection. Irregularities can include a fraction, a smaller diamond in the larger, liquid, etc. In diamonds with an SI-3 purity (low quality) the inclusions can already be visible to the naked eye. In diamonds of a higher quality, the inclusions are only visible with a magnifying glass. The fewer inclusions, the higher the purity, the rarer the diamond and the higher the price.
A yellow diamond color.
The instrument to measure the dimensions of a diamond.
The weight of a diamond is measured in carats. One carat is 200 mg. The heavier the diamond, the more expensive it is. The word 'Karaat' is derived from 'carob', the core of the carob tree. In ancient times, diamonds were weighted by comparing them to carob kernel. A carob tree core also weighs 200 mg.
A diamond should be possible as colorless. The color degree describes the color nuances in the diamond. D is perfectly colorless. This color is very rare and is very expensive. The color scale goes from D to Z and indicates the yellow and brown tones. An expert can spot the differences in closer shades, but even a layperson, with a little practice provided, can see color differences if the a few degrees from each other. Pink, blue, red and green diamonds also come first, but these are very rare and therefore very expensive. These colored diamonds follow the normal color / price system and are priced separately.
This is the system of grading the color of diamonds based on their colorlessness (white diamonds) or their spectral hue, depth or purity of color (for color diamonds). For white diamonds, GIA and AGS use an examination system that goes from D (overall colorless) to Z (light yellow).
This is a misnomer that is used by some people in the jewelry industry to indicate the presence of certain inclusions in a diamond. The term refers to the dark appearance of the inherent crystals (as opposed to the normally white or transparent appearance) when examined microscopically. In most cases these dark inclusions are invisible to the naked eye and have no effect on the brilliance of the diamond.
The crown refers to the upper part of the cut gemstone that is above the belt. The crown consists of a table facet, surrounded by either star and bezel facets (on round diamonds and most "fancy" cuts) or by the concentric facets that extend from the table to the belt (on emerald cut shapes).
Marquise diamonds, also known as navette diamonds, are similar to cuts of the oval diamond with pointed ends and a slightly narrower center. With the same number of facets as the round brilliant, marquise diamonds have the fiery shine.
Bumps are typical of the diamond's clarity and appear on the surface of the diamond. Although some bumps are specific to the original rough diamonds, most have been a direct consequence of the environmental impact on the diamond since its degeneration.
Oval cut shape
The oval cut is comparable to a brilliant-cut diamond with an oval shape. One problem with oval cuts (as well as other related cuts) is the correct ratio and the bow-tie effect - this is a dark bow-tie shaped area in the center of the diamond - which is why it is important to have one well cut oval diamond to have.
A style of jewelry design in which several small diamonds are set close together to create a shiny row of diamonds that covers the entire jewel so that the metal underneath is no longer visible.
The pavilion is the lower half of the diamond, from the belt to the culasse. If the pavilion is too deep or not deep enough, the light should escape in the diamond. The diamond loses fire and brilliance in this way.
Peer cut shape
The teardrop shape, also known as the pendeloque or the teardrop diamond, is a combination of the round brilliant diamond and the marquise - usually from the special cuts of the rough diamonds, so that they have the most carat weight.
Platinum is a chemical element (Pt, atomic number 78). The name is derived from the Spanish term "Platina del Pinto", which literally means 'little silver of the Pinto River.' It's a dense, sturdy, ductile gray-white metal. Even with its six natural isotopes, platinum is one of the rarest elements in the earth's crust and has a mass of around 0.005 mg / kg. Platinum was usually found in South Africa (80% of world production).
A unit of measure used to measure the weight of a diamond. 1 point is equal to one hundredth of 1 carat.
the princess diamond is the second most popular diamond after the brilliant. Since the princess cut requires fewer rough diamonds in the cut process, they generally have a higher carat weight than round diamonds.
The shining diamonds are a combination of the brilliance of the brilliant cut diamond and the emerald cut. Developed in 1977 by Henry Grossbard, the shining diamonds became popular as a diamond for an engagement ring as well as other pieces of diamond jewelry.
A ring knife is an instrument used to measure the size of a ring.
The round diamond is the most popular diamond shape and generally offers a good balance between color, cut and clarity.
This is the term used when the material of the diamond is planed by heat.
The brilliance makes the diamonds sparkle. When the white light hits the diamond it gives a brightening effect. A diamond cut in the right proportions increases the reflection of light and gives maximum brilliance.
Typically, this term is used to refer to the shape of the stone (round, oval, peer, etc.) and its exact geometric proportions. Proportions are the most important factor in determining the extent to which the stone will shine, regardless of the shape.
The solitaire setting only has a single diamond, the center of the jewel. The clamps ensure that the diamond is positioned in the center of the ring, in such a way that it catches the most light.
Cleavage refers to the tendency of crystal minerals (e.g. diamond) to split in one or more directions, either along or parallel to certain fields, when they are hit hard. The cleavage method is one of the two most commonly used among diamond cutters to split coarse crystals in preparation for the grinding process (saw is the other method).
Symmetry refers to the variations in the symmetry of the diamond. The small variations can include incorrect positioning of one or more facets so that they are not correctly positioned on the belt (please note that this incorrect positioning is completely invisible to the eye). Symmetry is an indicator of the cut quality of the diamonds. It is classified as ideal, excellent, very good, good, modal or bad.
The table is the top facet of the diamond. If the table is too small or too big it will affect the general proportions, brilliance and fire.
The table percentage is the width of the table divided by its total diameter. It is a very important factor in the sparkle of the diamond.
Trilliant cut shape
The trillion diamonds - a variant of the trilliant - are the main styles of triangular diamonds. Originally developed in Amsterdam, the Billion is often used as a complementary stone in a set and is considered a variant of the radiant cut. Trillion Cut diamonds have 25 facets on the crown and 19 facets on the pavilion.Trilliant cut diamonds have the sharp corners of a real triangle while trillion cuts have slightly more rounded corners.
The vena amoris, or rather the vein of love, is a concept that dates back to the classical era. The Egyptians believed that the engagement or wedding ring had to be placed on the fourth finger of the left hand because the vein of love goes straight from the heart to that finger.
These are the small fractures in the diamond caused by excessive stress on the diamond when it was still under the ground. In some cases the spring starts and ends inside the surface of the diamond, while in other cases the spring starts inside the diamond and ends outside the surface. When you look at the fractures under a microscope, some feathers appear white and others appear transparent. The term "feather" has its origin in the facet, which when magnified, these fractures appear to have a feathery shape. While the idea of buying a diamond with these "fractures" doesn't sound particularly appealing, the reality is that the feathers (when properly grooved and normally worn) promote the diamond's stability.
A diamond's fire is the colored light that is reflected inside the stone. When white light hits the diamond, it is refracted into all the colors of the rainbow. A diamond works as a prism. Only diamonds that are perfectly polished have a beautiful fire.
Clouds are a grouping of a number of extremely small inclusions that are too small to distinguish from one another. When this group is observed under a microscope, it appears as if there is a transparent cloud inside the diamond. Of course, this cloud cannot be seen with the naked eye. Usually this type of recording will not affect the diamond's purity.
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