Table facet: Central facet on the table (or crown) of a gem or simulant.
Trichroism: Those gems that display precisely three different colors when viewed from different angles.
Table Facet: This is the largest facet of a diamond. It is located on the top of the diamond. The table facet is sometimes referred to as the "face." ...
Table Facet The top and largest facet on most diamonds including brilliant cuts.
Thermoluminescence The property of diamonds and other materials to emit light when heated.
Table facet: A table facet is the largest facet, located at the top of the diamond.
Table spread: The width of a table facet.
The length of the Table Facet is compared to the width of the Girdle and given a Table Percentage.
Comfort Fit:Where the inside (or shank) of a ring is slightly rounded to create a more comfortable fit on the finger Crown:The part of a cut gemstone lying between the girdle and the table facet.
Table percentage: The value which represents how the diameter of the table facet compares to the diameter of the entire diamond. So, a diamond with a 60% table has a table which is 60% as wide as the diamond''s outline.
Cheap glass imitations will have as few as nine table facets and the cut is often asymmetrical.
This means orienting the c-axis of the crystal parallel to the table facet. Gems cut with this orientation are often rectangles and rectangular emerald cuts because of the elongated nature of tourmaline crystals.
When a table facet is introduced on one of the long sides you are left with what eventually morphs into our modern baguette: an elongated table cut. In the diagram below this process is illustrated.
When you examine the gem in profile, the girdle and table facet are generally parallel. The pavilion’s main facet usually extends from the culet perpendicularly until it intersects the girdle.
In observing the lines of the table-edges - they are formed by the table-edges and in their elongation by the edges of the table facets - it can be seen that these, according to the size of the table, may be convex, ...
As a way of staving off the onslaught of secondary diamond markets, and preventing the inherent product misidentification that will follow, the DTC has developed new inscription technologies to "invisibly" mark the table facet of polished diamonds ...
The table % of a diamond is calculated by dividing the width of the table facet by the width of the diamond. So, if the table facet is 3 mm wide, and the diamond is 4.5 mm wide, its table % is 66.7.
A note of caution: ...
If the table facet on a diamond is very large, it may be a sign of a diamond that was cut in order to maintain maximum weight instead of maximum sparkle.
The crown consists of a table facet surrounded by either star and bezel facets (on round diamonds and most fancy cuts) or concentric rows of facets reaching from the table to the girdle (on emerald cuts and other step cuts).
Pear-shaped : oval stones, diamond or any other gemstone cut with oval table facets above and below girdle.
Marquise (marquis) or Navette : Refers to as the ""marquise" shaped stone faceted high up on the crown, leaving a small table.
Table:
The large flat facet on the top a diamond. If the table facet is too large or too small, it will often indicate poor proportions overall. Poor proportions will hurt a diamond's fire and brilliance.
This table facet was then finished off by polishing with diamond powder. (Bruting is the process where a diamond or diamond chip is used to wear away a portion of another diamond crystal.
FACE UP Describes the viewing position of a gem as seen when looking at it perpendicular to the table facet. A gemstone that faces up well is excellent in appearance in relation to its color or clarity grades.
Depth: The height of a diamond measured from the culet at the very bottom to the large table facet on the top. The depth is always measured in millimeters.
STAR FACETS - The eight triangular facets that surround the table facet of a round, brilliant-cut diamond.
These cuts contain large table facets through which an admirer can best view the emerald's rich colour and its fascinating inclusion panorama
Emeralds are increasingly cut in other shapes, including round, oval, free form, pear and marquise ...
Cut shaped by a rectangular table facet and girdle, with rectangular facets parallel to these.
Step Design ...
To tell the difference between topaz and smoky quartz, run your thumb across the table facet; topaz is very slippery and your thumb will slide across the facet like ice, while your thumb will "stick" on the quartz.
Usually lighter colored tourmalines are oriented with table facet perpendicular to the c-axis to bring out the deepest color. Tourmalines are usually cut as rounds, triangles, trillions and ovals.
Zoning (color zoning) A term that describes the uneven distribution of color in a gemstone. Zoning is best seen when looking at the stone through the top table facet.
The use of such cuts is largely determined by the original shape of the stone. Large rubies, sapphires, and emeralds are often cut square or rectangular with a large table facet surrounded by a relatively small number of supplementary facets.
known as the 'Beau Sancy', or 'Little Sancy' and was destined to pursue a different course of history from Sancy's larger diamond. The Beau Sancy is a colorless, rounded pear shape, cut with a total of 110 facets, including the two small table facets.
dealer in colored stones, whether importer, wholesaler, or retailer, should have one, as by its use very rapid and very accurate determinations of stones may be made, and its use is not confined to unmounted stones, for any stone whose table facet ...
 See also: Table, Facet, Diamond, Stone, Cut
  
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