Loose Diamond Definitions: P

Pave-A style of setting small stones as close together as possible in two or more rows.

Pavilion-That portion of a faceted diamond or other gem material that lies below the girdle.

Pear Shaped Cut - A type of fancy shape diamond that resembles a teardrop.

Pink Diamond-A term often used loosely in the trade to describe any diamond of pale reddish, purplish-red, purplish or violetish hue.

Pinpoints - Miniscule spots internal to a diamond. A cluster of pinpoints can form a cloud.

Pipe-The common name for a vertical, columnar mass of rock that cooled and solidified in the neck of a volcano.

Pit - A tiny opening, often looking like a white dot.

Plotting Diagram-A schematic diagram included on the EGL USA Diamond Certificate that illustrates the facets a diamond and the approximate location and type of internal and external characteristics.

Point - 100th of a carat.

Polish-The relative smoothness of a surface, or the degree to which the finish of the surface approaches optical perfection. A well-polished diamond shows no wheel marks or burn marks under 10X.

Polish Lines - Tiny parallel lines left by polishing. Fine parallel ridges confined to a single facet, caused by crystal structure irregularities, or tiny parallel polished grooves produced by irregularities in the scrape surface.

Polish Mark - Surface clouding caused by excessive heat, or uneven polished surface resulting from structural irregularities.

Polishing-The reduction of a rough or irregular surface to a smooth flatness or curvature.

Princess Cut - A type of brilliant cut fancy shape that can be either square or rectangular.

Proportions-A term that meant originally the distribution of the mass of a fashioned diamond above and below the girdle.

A | B | C | D | E | F | G | H | I | J | K | L | M
N | O | P | Q | R | S | T | U | V | W | X | Y | Z