Extra facets

Extra facets occur as additions to the normal number of facets on a brilliant.
They can occur anywhere on a stone but are usually found in the vicinity of the girdle (Fig 323).

EXTRA FACETS:
A diamond that has one or more facets in addition to the normal number of facets in a particular cutting style.
See also: Inclusion Facet
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Extra facets: These are formed when the raw stone is being processed at cutting stage. In order to remove the natural inclusions the stone is cut that result in the extra facets (sides). It is done to enhance the clarity.

Extra Facets: small facets placed to remove imperfections; not part of the cutting style. (Not to be confused with Added Facets which are added symmetrically and are part of the cutting style.) ...

Extra Facets
Extra Facets are usually found on the bottom side of the Girdle (running into the Pavilion).

Extra facets: Facets in excess of those needed to achieve a given style of cutting. They usually result from polishing away nicks, chips, naturals, etc., on or near the surface.

The left and right are Bauer's front and side views of the stone, the center is the side view corrected to match Bauer's front view - note the extra facets. This style of briolette is called a double-rose, due to the fact the stone has a girdle.

Such things as extra facets, "naturals", and polish marks are also included in clarity grading. Clarity grading is a very relative practice; no masters are used and the grader relies heavily on training and experience.

Because these corners were once near the outer edge of the rough stone, flaws such as naturals, extra facets, and other inclusions may be located here.

The zircon cut, a variation of the brilliant cut that adds eight extra facets to the pavilion, was designed to take advantage of these properties. Heat treatment of colored material to enhance or change the color is an accepted practice.

Walter had a nice round brilliant yellow sapphire that just needed a little spiffing up. A few extra facets on the pavilion really made it lively.

The presence of polishing lines, of a bearded or misaligned girdle, or a table or culet slightly off center, or an imperfect octagonal table, or a bad junction between table and pavilion facets, or missing or extra facets, ...

Good polish is crucial for maximum brilliance of a diamond, but it takes a trained eye to distinguish between polish grades. Extra facets to remove a part of the rough are common, ...

/ marks occur on the surface, they are known as blemishes and the most common types of blemishes include Polish lines, Naturals, Scratches, Nicks, Pits, transparent stress lines that appear on a diamond's surface, surface graining, and extra facets, ...

refers to the appropriateness of the shape and facet arrangement of the stone - how identical and exact the size as well as placement of each facet is. Symmetrical imperfections include off-center table, wavy girdle, misshapen or extra facets, ...

The most common types of blemishes include naturals, a small part of the original rough diamond's surface which has been left on the cut diamond; surface graining, transparent stress lines that appear on a diamond's surface; and extra facets, ...

Possessing dispersion approaching that of diamond, the brilliance of zircon is second to none. The zircon cut, a variation of the round brilliant cut that adds eight extra facets to the pavilion, was designed to take advantage of these properties.

Inclusions (inside the diamond) may take the form of crystals, cracks, clouds, growth lines, and cavities. Surface blemishes may include scratches, nicks, pits, abraded facet edges, extra facets and naturals. See additional information on Clarity.

Common cutting problems can occur during the faceting process, when one incorrect facet angle can throw off the symmetry of the entire stone. This can also result in the undesirable creation of extra facets beyond the required 58.

Occasionally a cutter will find the need to remove an inclusion near the surface or to compensate for facets which do not meet correctly and he will add an "extra facet". Extra facets have no effect on clarity grades.

Cut grade also encompasses attributes such as polish lines, pits, misalignment of facets, off-center table, naturals, extra facets, wavy girdle (perimeter), ...

See also: Extra facet, Diamond, Cut, Facet, Facets