3.30 Carat Round Lab-Grown Diamond ,F ,VS1 ,IGI Cerified Diamond

Fluorescence refers to a diamond's tendency to emit a soft colored glow when subjected to ultraviolet light (such as a "black light"). Roughly 30% of diamonds fluoresce to some degree. Colorless (D-F) fluorescent diamonds sell at up to a 15% discount since the fluorescence is perceived as a defect.

A diamond cut is a style or design guide used when shaping a diamond for polishing such as the brilliant cut. Cut does not refer to shape (pear, oval), but the symmetry, proportioning and polish of a diamond.

Polish refers to the degree of smoothness of each facet of a diamond as measured by a gemologist. When a diamond is cut and polished, microscopic surface defects may be created by the polishing wheel as it drags tiny dislodged crystals across the diamond's surface.

Symmetry” refers to the exactness of the shape of a diamond, and the symmetrical arrangement and even placement of the facets. Symmetry is also assessed on a scale ranging from excellent to poor.

The table refers to the flat facet of the diamond which can be seen when the stone is face up. It also happens to be the largest facet on a diamond and plays a vital role on brilliance and light performance of a stone.

Diamond depth is a crucial factor of a diamond's cut. The depth of diamond is its height (in millimeters) measured from the culet (bottom tip) to the table (flat, top surface). On a grading report, there are normally two measurements of diamond depth. The first measurement is the actual depth of diamond in millimeters.

Girdle is the thin perimeter of a diamond, dividing the crown above from the pavilion below. A diamond girdle can be rough, polished or faceted. Brilliant cut diamonds (with triangular-shaped facets) usually have a faceted girdle rather than a perfectly round girdle; this gives the gem a higher measure of transparency.

Diamond Girdle Thickness And Why It Is Important. A diamond's outermost edge is also known as the girdle. Its thickness is measured as a percentage of the diameter (e.g. thin = 1.0%, medium = 3.0%, thick = 4.0% etc…) or quoted as words (such as Thick or Thin).

The Crown in a diamond, the crown and table facets act as windows, driving light return and ultimately determining the brightness of the diamond. It's the perimeter of the diamond. Usually the girdle is the part of the diamond that's used to hold it in place in the ring setting. The Crown. If we picture the girdle as the widest part, then the portion of the diamond above the girdle is the CROWN.

Simply put, the pavilion is the "bottom half" of the diamond. While the pavilion is usually hidden under a ring setting, it is an important part of a diamond's overall look, as the pavilion contains facets that help light bounce, enter, and reflect through the diamond, giving it brilliance and fire.