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The modern round brilliant consists of 58 facets (or 57 if the culet is excluded), ordinarily today cut in two pyramids placed base to base: 33 on the crown (the top half above the middle or girdle of the stone), truncated comparatively near its base by the table, and 25 on the pavilion (the lower half below the girdle), which has only the apex ...
Diamond earrings with culets clearly visible through the stones Diamond proportions and facets, for the round brilliant cut. In gemology, a culet is a flat face on the bottom of a gemstone. During the 14th century, after the adoption of the table cut, a further facet was added to the bottom of the cut parallel to the surface of the table.
Line art or line drawing is any image that consists of distinct straight lines or curved lines placed against a background (usually plain). Two-dimensional or three-dimensional objects are often represented through shade (darkness) or hue . Line art can use lines of different colors, although line art is usually monochromatic.
A simplified round brilliant cut process includes the following stages: Planning – Modern day planning of a diamond is done using computer software. Marking – Outlining the best possible shape and cut of the diamond. Sawing the rough stone – depending on the shape of rough diamond as not all diamonds are sawn. Table; Bruting the girdle.
Lapidary (from the Latin lapidarius) is the practice of shaping stone, minerals, or gemstones into decorative items such as cabochons, engraved gems (including cameos), and faceted designs. A person who practices lapidary techniques of cutting, grinding, and polishing is known as a lapidary or lapidarist .
The Stone of Motecuhzoma I on display in Mexico City. The Stone of Motecuhzoma I is a pre-Columbian stone monolith dating back to the rule of Motecuhzoma I (1440-1469), the fifth Tlatoani (ruler) of Tenochtitlan. The monolith measures approximately 12 feet in diameter and 39 inches tall, and is also known as the Stone of Motecuhzoma Ilhuicamina ...
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Cutting and polishing diamonds in the Netherlands, 1946. The art of cutting a gem is an exacting procedure performed on a faceting machine.The ideal product of facet cutting is a gemstone that displays a pleasing balance of internal reflections of light known as brilliance, strong and colorful dispersion which is commonly referred to as "fire", and brightly colored flashes of reflected light ...