A diamond can be easily sproede

Color stone and diamond cuts at a glance

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Processing of diamonds & other precious stones

The diamond is the hardest stone in the world - it cannot be scratched by any other material. This phenomenon is known as scratch hardness, but the grinding hardness of the diamond is also considerable: it is 140 times as hard as corundum - the second hardest material on the Mohs hardness scale, which compares the hardness of minerals. The diamond is very brittle and can be destroyed by a blow, this property makes it possible to cut into several small stones. Diamonds can only be cut from diamonds. This is possible because the hardness is different on the different surfaces. For this purpose, saw blades or grinding wheels are used, which are set with small diamonds or diamond dust. The processing of the diamond is decisive for the sparkle and brilliance of the stone and brings out his soul. It is this soul that makes diamond jewelry so irresistible and exciting.

The grinding of diamonds has only been possible since the 20th century, as the technology required to process the diamonds was previously lacking. The inner light reflections are caused by the grinding of the individual facets - a process that requires the precise calculation of special angular relationships. Nowadays, these angles are calculated and simulated on computers before the diamonds are cut on machines. Since the 1980s, the stones have also been processed with lasers to remove small impurities and to mark them.

Many different types of cut have developed over the years. The brilliant cut is the most widespread nowadays. Depending on the piece of jewelry, another of the cut types may be the right one. With the perfect cut, diamonds are one very special investment. We at BROGLE know this and therefore offer you loose diamonds for sale: Brogle Diamonds.

Smooth and facet cut

There are two methods of turning a stone into a gemstone: by smooth grinding or facet grinding. In the first case, the stone is given a flat surface over which one can look into its depths. In the second case, it increases its light through a system of many straight surfaces that are at certain angles to each other. Diamonds are always facet cut.

Smooth cut cabochon for colored gemstones

The most famous smooth cut is the cabochon. It has a round or oval shape, is convex on the top and flat on the bottom. The only exception is the double cabochon, which bulges outwards on both sides. Advantages of the cabochon cut are that it can emphasize the structure and the color shades of a gemstone. It is mainly used for quartz, hawk's eye, tiger's eye, moonstone and opals. Incidentally, high-quality movements sometimes have gemstone cabochons, which act as axle bearings here.

It is known for many stunning cabochon jewelry pieces Tamara Comolli with their colorful Mikado pendants and the Bouton collection.

Brilliant - the most famous facet cut

Many believe that brilliant and diamond are two words for one and the same gemstone. But no: a diamond is a diamond, but not every diamond is a brilliant. Because a diamond only designates one whole special cut shape of a diamond. However, the brilliant cut is the best known of all cut forms. A synonym for brilliant cut is round cut.

The cut brilliant diamond consists of a table, top, bottom, girdle and point. Depending on which one Size ratio the parts are in relation to each other, determines the brilliance of the diamond. There is no such thing as the "perfect" relationship. The size distribution of table, upper part (girdle to table) and lower part (lower tip to girdle) differs from country to country, but mostly only in small percentages. It is undisputed that the diamond must neither be cut too flat nor too thick, as otherwise the light rays could not be properly absorbed and reflected.

The brilliant cut has been known since 1919. The mathematician Marcel Tolkowsky is considered to be its inventor, because he developed the completely symmetrical cut that optimally reflects the light. The brilliant got its name from this wonderful shine in all rainbow colors - the word has its origin in French “brilliant”, which means shiny. If stones other than diamonds are cut according to this pattern, this must be clearly marked. The indication “brilliant” is reserved for real diamonds.

Fope Flex'it Vendôme Ring
White gold with diamonds 0.1 ct.

Fope Flex'it Vendôme Ring
Yellow gold set with diamonds 0.2 ct.

Fope Solo Mialuce Ring
White gold with pavé trim 0.7 ct.

Fope Flex'it Vendôme Ring
White gold with diamonds 0.1 ct.

Schaffrath Calla Ring
with 1 diamond (0.15 carat)

Fope Flex'it Vendôme Ring
Yellow gold set with diamonds 0.2 ct.

Fope Flex'it Prima Ring
White gold with diamonds 0.07 ct.

Fope Flex'it Prima Ring
White gold with diamonds 0.07 ct.

How the diamond kindles the fire

The fact that a diamond can sparkle so uniquely is due to the facets, which can be imagined as small planes or platelets on the diamond surface. A brilliant cut diamond has at least 32 facets in the top plus table and at least 24 in the bottom. Anyone who has ever made a diamond dance in the light will have seen that the stone is also one colored play of light having on its surface. This phenomenon is known as the diamond's "fire" and is based on the physical basis of dispersion. Here, white light is deflected by the normal shaving device and thus broken into its individual colored light wavelengths. In the case of a diamond, this mainly happens on the slope of the upper part towards the table. The greater this is, the more fire the diamond has. However, since the table would lose space in this case, the stone would lose its brilliance, since it primarily emanates from the table. A well-cut diamond will hold up balance between the table and the wreath of the top - between brilliance and fire.

Diamonds in brilliant reed are popular for all types of jewelry, but they are especially in demand for engagement rings. The diamond not only crowns classic solitaire rings with a claw setting, but can also be used in a bezel setting, in a channel setting or in a pavé setting.

Hearts & Arrows diamonds: the perfect cut

Hearts and arrows cause great emotions not only in Greek mythology, but also with diamonds. Hearts and Arrows diamonds probably have that best and most sought-after brilliant cut diamondthat there is. If you look at the stone from below, the hearts become visible, and the arrows should be visible from above. However, only if eight of each of the two symbols can be seen, the stone can officially name itself as Hearts and Arrows diamond. They are considered the epitome of perfect symmetry.

Oval cut for diamonds - popular with finger rings

The oval cut helped the Russian Lazare Kaplan into the “Hall of Fame” of the jewelers, who perfected the well-known oval diamond shape in 1957. Its oval cut is based on the brilliant cut, but stretches the diamond in a ratio of 3: 2 of length and width. Here, too, the perfect symmetry is of considerable importance for the luminosity of the stone. Oval brilliant-cut diamonds have 58 facets. One advantage of the oval cut is its so-called “optimal carat weight” - the symmetrical elongated shape makes the diamond appear larger than it actually is. As a gemstone for engagement rings or other rings, ovals can also make the fingers appear more delicate and longer. A disadvantage of the oval cut, however, is that "Bow-Tie-Effect" or "Fly Effect": A low-light zone forms under the upper panel, the outline of which is reminiscent of a tied fly. However, this effect can be mitigated with skillful production.

Pendeloque - the most popular cut for earrings

The shape of a pendeloque cut is reminiscent of a pendulum, as the name suggests, as the gemstone is wide and rounded at the bottom and tapering to a point at the top. Likewise, one can Drops or a pear recognize in its outline, therefore this cut form is also known under the names pear cut, pear cut, pear core cut or pear shape cut. Another French name is briolette. The pendeloque cut is especially popular for earrings. You can find pear-cut earrings in our online shop, for example these stud earrings with 38 diamonds from our Royal collection. The inventor of the polishing disc for diamonds, Lodewyk van Berquem from Flanders, ground stones in the shape of drops.

The Pendeloque has proportions from 15/10 to 17/10 in the ratio of the long side to the short side and usually has 58 facets. The lower major facets can range from 4 to 8; A variation with a point made from star facets is also possible. Diamonds and other gemstones in the Pendeloque cut can look very different. The bow-tie effect can also arise with the drop shape, i.e. shadows can form on the central facets. In the best case, the pendeloque cut has a round bottom and a polished girdle (the widest part of the stone). A less rounded shape can, however, lengthen the fingers optically.

Marquise brilliant cut - the diamond of Madame de Pompadour

The marquise cut has a fascinating history. In the middle of the 18th century, the French King XV commissioned his court jeweler to cut a diamond that would Smile of his famous mistress, the Marquise Madame de Pompadour, should reflect.

The marquise brilliant cut that is common today, tapering to a point in two directions, has a shape similar to that of a boat hull and is therefore also called “Navette”. Of the 58 facets, 33 are in the upper part and 25 in the lower part. Sometimes the marquise is ground with a so-called “French point”. Then there is a star facet on the underside, as is the case with heart and pear shaped cuts.

Ideally, the proportions of the marquise shape should be 2: 1. Often, however, the shape is also stretched or compressed. The bow-tie effect can also be seen in the marquise cut when the central facets form a shadow. This effect occurs similarly with drops, oval and heart cuts.

A Advantage of the marquise cut is that it looks bigger than other cuts of the same weight. In addition, as part of a ring, it can optically lengthen the finger. It is often combined with diamonds or pendeloque cuts. You can recognize a high-quality marquise cut by the fact that the light below does not emerge unbroken and in this way the fire is not diminished.

Emerald cut - for diamonds of the greatest purity

The emerald cut or emerald cut, like the baguette cut, belongs to the stair cut shapes, that is, the facets are arranged in steps. With the emerald cut, these stairs lead to a wide, open table, which here appears like a platform. The name “emerald” cut can be irritating, although it was specially developed for emeralds, it is now also used quite naturally for diamonds and other gemstones. Another characteristic of the emerald cut is its elongated, almost rectangular shape with cut corners. The emerald cut usually has 57 facets, the majority (32) of which are on the base. However, the number of facets varies according to the number of “stairs”. The aspect ratio is also variable between 13/10 and 15/10. With finger rings, a longer shape has the advantage of visually lengthening the fingers.

The emerald cut is one of the most famous and oldest cuts. Although it has a lower fire than a brilliant cut, it has its own charm due to the wide table that reveals the purity of the diamond. Therefore, diamonds of higher purity are recommended for emerald cuts.

Related to the emerald cut is the baguette cut, which was developed specifically for diamonds in 1925. Its rectangular shape is much narrower or more elongated than the emerald cut. Since only two rows of steps are grouped around the oblong table, it also has considerably fewer facets. Often, baguette-cut diamonds serve as the side stones of emerald-cut diamonds.

The princess cut - square cut with a unique fire

Developed in the 1970s, the princess cut is one of the modern cut shapes. As for the princess cut one Patent law exists, it is also sold in a similar form as Square Modified Brilliant. The original princess cut, however, is square or minimally rectangular. Since he's over 57 or 76 facets as well as a pyramid shape with beveled edges, it can decompose more light than any other rectangular shape. As a “square diamond” it is popular for solitaire engagement rings and earrings. Because of its shape, diamonds can be princess-cut Set next to each other without gaps and are therefore also wonderfully suitable for eternity rings. We recommend solitaire rings with princess cut diamonds especially for narrow, longer fingers.

Other cuts - Dutch rose & octagonal cut

There are many other types of cut of diamonds and other precious stones, but these are used less often. A very traditional cut is for example the rose cut or diamond cut. This was developed for diamonds in Holland at the end of the 16th century, but is now almost only used for garnets. The full Dutch rose has 24 facets, each triangular in shape. But since you can cut diamonds with a saw, the rose cut is only used for very small specimens. Often these only consist of three to six triangular facets, which are then called diamond diamonds rather than roses. Diamond diamonds are often used as trimmings: They are used to frame larger stones or for pavé settings.

The is also popular for trimming stones Octagonal cut. Because with smaller diamonds up to a maximum of 0.02 carats, it can even produce a larger fire than a diamond. This is a cut diamond with eight facets each in the upper and lower part as well as the table.

Our overview proves: the different diamond cuts are just as numerous as the facets of a brilliant. Since they also have different qualities apart from their looks, choosing the right diamond jewelry or the right solitaire ring is not always easy. We would be happy to help you find your individual diamond!

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