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The modern "Round Brilliant Cut" (below) was developed by Belgian diamond-cutter Marcel Tolkowsky in 1919. This cut is also known as the "Tolkowsky Cut" and "Tolkowsky Brilliant.
Round Brilliant Cut: See Brilliant cut.
Rubellite: Red Tourmaline.
Round Brilliant cut: The most common cut containing 58 facets. Also the most brilliant cut, in terms of most efficient use of light to increase brilliance and fire, hence the name.
Saturation: A color's position on a neutral to vivid scale.
modern round brilliant cut See modern cut.
Mohs, Friedrich A German mineralogist who invented the Mohs' scale for classifying the hardness of minerals. Also see Mohs' scale.
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Round Brilliant Cut Diamond
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Round brilliant cut gemstones are known to have the most vibrancy and sparkle. With 57 or 58 facets radiating from the center out to the girdle, a brilliant cut maximizes the amount of light that is reflected from the core of the gemstone.
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Round Brilliant Cut
This is the most classic and timeless of all shapes. More than 75% of diamonds sold for engagement rings or in jewelry are round brilliants. The round brilliant diamond is the most brilliant diamond shape in existence.
Round brilliant cuts follow exact standards, so you can make a good estimate of the carat weight of the stone based on the stone's diameter.
A round brilliant cut diamond set in a ring
The diamond industry can be broadly separated into two basically distinct categories: one dealing with gem-grade diamonds and another for industrial-grade diamonds.
The round brilliant cut diamond is by far the most popular shape, and accounts for about 3 out of 4 diamonds purchased today.
With round brilliant cut diamonds accounting for over 80% of diamond sales worldwide, ask anyone what a diamond’s shape is and they will probably say round.
6.0mm Round Brilliant Cut
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Form of round brilliant cut which is the benchmark for ideal cuts in North America. Cut was discovered in 1919 by Marcel Tolkowsky, a renowned Belgian diamond cutter.
Tone
The position of diamond color on a grade from colorless to black.
It is a round brilliant cut unless otherwise stated normally with 58 facets including the culet and polished using relatively modern theory. This shape is considered as ideal for a diamond because it maximizes a stone's sparkle and brilliance.
After the round brilliant cut, the princess cut is the most popular cut when it comes to diamond cuts and shapes. The princess cut was unveiled in the early 1960s and has been gaining in popularity ever since.
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Contents
1 Diamonds as we know them
2 Diamonds as they knew them
3 The first Brilliants
4 Old Mine Cuts
5 Old European Cuts
6 Standard Round Brilliant
7 Fancy Brilliants ...
Round Cut: Round brilliant cut.
Cabochon: A gemstone fashioned with a domed or convex smooth and polished surface.
Girdle The ridge at the center of a gemstone.
Glamorous influences- The round brilliant cut remains the most popular shape but Hollywood and the fashion industry have made fancy shapes such as emerald, marquise, princess, heart and Asscher popular.
A traditional round brilliant cut diamond has either 57 or 58 facets or flat polished surfaces. Sometimes the diamond cutter won't cut a tiny flat facet on the point of the stone. If this is the case, you'll have a diamond with 57 facets.
You can also find smaller sapphires in round brilliant cuts and a wide variety of fancy shapes, including triangles, squares, emerald cuts, marquises, pear shapes, baguette shapes, and cabochon cuts, or smooth domes.
Heart shape diamonds are basically a distinct type of round brilliant cuts. A heart shape diamond does not have much luster to showcase.
A classic round brilliant cut diamond has 58 facets : 33 on the top, 24 on the bottom, and the culet (1 point at the bottom). Each of the diamond's facets must be placed in exact geometric relation to one another when the stone is being cut.
Old European Cut: A round Brilliant cut with 58 facets, similar to the old mine cut, first appearing in around the 1880's. It is characterized by a deep pavilion, high crown, and an open culet.
Old mine cut: See Mine Cut.
When most people think of diamonds, what comes to mind is the modern round brilliant cut - and with good reason. Many experts consider this the "ideal" shape for a diamond because it maximizes a stone's sparkle.
been in the diamond trade and it was his great-uncle, Marcel Tolkowsky, diamond expert and mathematician, who published a book in 1919 titled "Diamond Design", which for the first time set out exact ways of cutting the modern round brilliant cut.
Pear shaped diamonds are a variation of the round brilliant cut diamonds.
It could be considered as a round brilliant cut at one end, and a marquise shape at the other end.
If you love the fire of the traditional Round Brilliant Cut (the standard diamond engagement ring cut), but want something a little different, you might just fall in love with the icy fire of the square Princess Cut Diamond.
This term usually refers to a 19th century round diamond cut with 58 facets, similar to the round Brilliant Cut we have today.
Marquise: A modified version of the round brilliant cut, navette (boat) shape with 58 facets.
Masonic Jewellery: Various articles of jewellery decorated with the insignia of the Freemasons.
Any style of diamond cutting other than round brilliant cut or single cut
Feather
An inclusion in diamonds that bears resemblance to a feather ...
Facet: The flat polished panels on the diamond. The Round Brilliant Cut has 57 facets and if the culet is bobbed, 58 facets.
BRILLIANT CUT:
A gemstone cutting style involving multiple facets designed to maximize brilliance. A modern round brilliant cut diamond or gemstone has 58 facets. Also known as full cut.
See also: Shape
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A square cut, which is facetted similar to an Emerald Cut above the girdle and facetted like a Round Brilliant Cut below the girdle.
PRINCESS LENGTH A single strand of pearls 18" in length.
Diamond Cut - Also known as "Brilliant cut," the style of cutting a stone with multiple facets to maximize brilliance. Modern round brilliant cuts have 58 facets.
Cut: One of the 4 "Cs" of diamond grading. The most popular cut is the round brilliant cut. The cut of the diamond will determine it's fire.
Cut Beads: Glass beads that have been faceted.
It is a very hard gemstone, harder than most metals. It has amazing optical properties that can be maximized by cutting. The Round Brilliant cut takes full advantage of these properties. Ideal Cut diamonds will always be the exact same proportions.
CULET - The small facet polished across what would otherwise be the sharp point or tip of the pavilion of a faceted stone, especially a round brilliant cut. It is cut and placed with the full intention of avoiding breakage of this tip.
ideal cut A specific set of proportions discovered by Marcel Tolkowsky in 1919 thought to produce the greatest brilliance and maximum dispersion in a round brilliant cut diamond.
imperial Archaic term used to describe certain hues of topaz.
Brilliant Cut: Brilliant cuts are scientifically found to reflect the most light from within the stone, and often are considered to have the most brilliance of all cuts. A round brilliant cut diamond has 58 facets.
a Round Brilliant Cut, the facet arrangement of the Emerald Cut makes the clarity features much more noticeable to the eye; therefore, most consumers select a higher rarer clarity grade when choosing such a shape.
The martini setting is aptly named for its three-prong setting that cradles the gemstone giving it the appearance of a martini glass. Gemstones are usually round brilliant cut to further the cocktail glass aesthetic, but other styles can be used.
Ideal quality diamonds are truly for the person who enjoys knowing that they have one of the finest quality diamonds that money can buy. The Ideal cut category applies only to round brilliant cut diamonds.
 See also: Brilliant, Brilliant cut, Diamond, Cut, Carat
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