- Table - the large facet at the top of the diamond.
Sparkle is the appearance of spots of light that flash as the diamond moves. Pattern is the arrangement and contrast of the bright and dark areas of the diamond resulting from light reflections.
- Table Percentage -
For a round brilliant cut, the average width of the table as a percentage of the average diameter of the diamond. For fancy shapes, it is the width of the table as a percentage of the width of the entire diamond.
- Treated Diamond - a diamond that has been altered to affect color or clarity.
See Irradiated Diamond and Color Enhancement.
- Trillion Cut - See Shape.
- Twinning Wisp -a series of pinpoints and/or clouds that form in the diamond's growth plane.
This is a clarity characteristics that negatively impacts the diamond's value.
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