Abstract The bare rough stones from the mines have experienced the important part of “reborning†before they become the jewels of your neck and fingers. That is the gemstone type cutting. Through this process, the gemstone has a certain shape,...
The bare rough stones from the mines have experienced an important part of “reborning†before they become the jewels of your neck and fingers. That is the gemstone type cutting. Through this process, the gemstone has a certain shape, giving it a more radiant brilliance and color, which is set in the jewelry. There are a wide variety of colored gemstones, and there are many different types of cuts. Here, I will introduce you to the common way of cutting gems. Curved cut
The arc-shaped cut is also called the “face-like†or “convex-shaped†cut. It is characterized by at least one curved surface of the gemstone, suitable for the processing of jade or part of single crystal gemstones, especially gemstones with special optical effects. Such as jade, agate, turquoise, opal, cat eyes and so on. The curved gemstones are either flat (or slightly dome) and convex, or round hemispheres. In addition to the traditional oval shape, the curved gemstone can also be cut into other shapes, including triangles, marquise shapes, rectangles, and the like.
2. Triangle cut
This method was produced in Amsterdam and the standard facet of the triangle cut is 43. Usually the best length to width ratio of 1:1, showing a variety of faceted design, this cutting method created a magnificent wedge shape, dazzling. The apex and bottom facets of the triangle cut are prominent and thin. Since the sides are equal, the triangle cut can reflect most of the light and color, showing the same luster effect as the round diamond cut.
For light-colored gems, it is suitable for triangular cutting, such as spodumene, aquamarine, beryl, etc., through the triangular cutting, these gems can be radiated as much as possible. In addition, some craftsmen also use the triangular cutting method to effectively enhance the gloss and brightness of the gemstones with darker appearance, such as tanzanite, manganese garnet, garnet and amethyst.
3. Checkered
Checker cut is a popular type in the market in recent years, with changes in processing equipment and proportions, and the style is relatively new. Checkered cuts are available in single and double sides, each with a square or diamond shape, simple and bright, and modern.
4. Long step cut
The number of facets of the long step cut is about 20. Most rectangular cuts are "stepped" cuts, which means that the table is cut into steps, the table is parallel to the edge, showing the pyramid shape with the top removed, and the bottom is squared with the mesa and the triangular facet. Long step cuts are best suited for gemstone types like tourmalines.
5. Octagon cut
The octagonal cut gemstone has a standard facet number of 53. This is another "trapezoidal" cut with four corners with certain specifications. The facet on the step is parallel to the circumference of the gemstone, and the step length of the pavilion is not equal. The octagonal cut gem is also very color-oriented. People pay attention.
6. Pear cut
The standard facet number for pear-shaped cuts is 71. This is a hybrid cutting method that combines the advantages of elliptical cuts and marquise cuts. The cut gemstones are shaped like a crystal clear teardrop. Pear-shaped cuts need to be changed according to the optical properties of each gemstone type, with a typical aspect ratio of 1.5:1 for an excellent appearance.
7. Emerald cut
The emerald-cut gem has 50 facets. The emerald cut is viewed from the top like a rectangle with a truncated corner, and a stepped facet, with a dazzling brilliance. Generally, the top surface of the gemstone is large, the crown is thinner, and the pavilion is thicker. The emerald cut is mainly used for the cutting of emeralds, but also for all transparent stones, especially the colored stones with beautiful colors. In this type of squat, the number of facets and the number of steps are not the most important, the color is placed at the top position, and the fire is in the secondary position.
The difference between emerald cut and octagonal cut is that the former pavilion steps are equal in length. In general, the aspect ratio should be 1.5:1 to 1.75:1.
8. Millennial cuts
All of this work has an incredible 1000 facets, and the millennium facets are named. This was first created in 1999 by Rogi Graca as a symbol of the uniqueness and challenges of the new century.
Each face of the Millennium Cut is concave and has a concentrating effect that enhances the brightness of the gemstone surface. However, the workload is 18 times that of other ç¢ type workloads. Since the pavilion has 624 facets and the table top has 376 facets, each facet has been touched 1~4 during the entire cutting and polishing process. Times.
9. Oval cut
The standard facet of an oval cut gem is 69. It is elliptical when viewed from above the gemstone. In the case of elliptical cuts, although the length to width ratio depends on the optical properties of the different types of gemstones, the ratio between the two should be 2:1. A well-cut oval gem is almost as dazzling as a round diamond-shaped gemstone, with a dazzling fire and an oval-shaped cut union with a particularly beautiful shape.
10. Heart-shaped cut
The number of standard facets of heart-shaped cut gemstones is 63, consisting of two symmetrical lobes, a central groove and a sharp corner at the bottom. The aspect ratio is normally 1:1 and the depth ratio is 59% to 63%. The most ideal. Viewed from the countertop, the shoulders should be rounded. Heart-shaped cut gemstones produce a beautiful glow. The heart shape is the ultimate symbol of love. On Valentine's Day, the sales of heart-shaped cut gems will increase significantly.
11. Long-angle ancient cuts
Long-angle ancient cuts are also called "old miners" or "old European" cuts, and some places are also called "pillow-shaped" cuts. The number of facets of long-angled ancient cut gemstones is about 64, which is basically like the intersection of deep cut and modern elliptical cuts with large facets usually used in the late 19th and early 20th centuries. Compared to the brilliance of other cut gemstones, this cut gem presents a wonderful, classic and romantic color that maximizes the luster of the gemstone.
12. Round diamond cut
Round diamond cuts are also known as round cuts, American ideal cuts, or American standard cuts. The standard number of facets for round diamond cuts is 57. This is the cut required by Russian scientist Marshall Torkovsky to achieve the desired diamond shape. The height of the Tolkovsky round diamond cutter is 58% of the diameter of the diamond, the percentage of the table is 43%, the percentage of depth is 14%, 58% may be the most critical dimension of this gem, this cutting method can provide The best optical effects make the gemstones dazzling in the light. This cutting method is especially suitable for diamonds, but it is now widely used.
13. Marquise cut
The standard facet number of the marquise cut gemstone is 57. The marquise cut is also known as the "spindle" cut or the "horse eye" cut. The cut jewels are sharp at both ends, shaped like a pit, with an aspect ratio of 2:1. The depth ratio is extremely important if the depth ratio is between 59% and 63%, and the crown ratio is between 11% and 16%. From the countertop, the marquise cut usually looks much larger than other cut gemstones of the same quality and produces better gloss and color.
14. Princess cut
Princess-style cut, also known as "square drill" cut, bright cut, sharp outline, 76 facets show a stronger fire, the best ratio is four sides of the same side, angular symmetrical square. The 70%-78% depth ratio is very rare, noble and eye-catching. The advantages of princess cuts are not limited to diamonds. This cutting method can also be used for cutting many other gemstones. Princess cuts usually work best for transparent gems that are lighter in color. The princess cut can maximize the brilliance of the gemstone.
Colored gemstones have ever-changing optical properties that are different from diamonds and cannot be cut into a consistent ideal pattern. A well-cut colored gemstone, when viewed from above, should exhibit a uniform color, acceptable enamel, good gloss, and show most of the carat weight.
There are many types of gemstones, and the design of the gemstones is constantly expanding. No plutonium is more beautiful than the other. The combination of the mystery of nature and the artistic craftsmanship will give each gem a more dazzling brilliance.
Under the consumer psychology of modern people seeking new and different, colored gem mine owners and industry people dream of new varieties coming out, but it is impossible to have new gemstones appear every one or two years. The industry will focus on The development of new and new cuts. Although it is also a gemstone category, the new cutting method will give the gem a different appearance, which is amazing and popular in the market. Each year, the American Gem Society (AGTA) hosts a gemstone cutting competition, which is guided by cutting and art. At the same time, jewelry companies, especially the cutting mill, will develop new cuts and new types that can be standardized.
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