To better understand the intricacies of diamonds and settings, here is a useful glossary of terms.
Jewellery Design Glossary
The brilliant look of a diamond under reflected light.
Mining of deposits transported by flowing water.
Famous WA mining complex in Kimberley Mountains.
A square emerald cut - wide corners, high crown and deep pavilion.
A small, rectangular-to-square step cut diamond.
The extraction of diamonds from a beach.
A girdle with a rough finish.
A thin strip of metal encircling a stone to secure it in a setting.
Very dark diamond that appears black due to numerous inclusions.
A defect on the surface of a polished diamond.
A dark area shaped like a bow-tie across a pear, marquise or oval shape diamond’s centre.
The intensity of the reflections of light from the top of a diamond.
An intensely yellow-coloured diamond.
Diamonds in the near-colourless to yellow colour grades (K to Z).
The weight of a diamond expressed in metric carats.
A misnomer for a black inclusion found in a diamond.
A square step-cut diamond.
A light brown to dark brown coloured diamond.
A diamond setting with two parallel metal walls.
A diamond’s relative lack of inclusions and blemishes.
A set of narrow metal supports to hold diamond in place.
Brown coloured diamond, also called Champagne Diamond.
A diamond’s body colour on the colourless-to-light-yellow scale.
The top of the diamond above the girdle.
The distance between the girdle and the table of a diamond.
Girdle height as a percentage of the girdle diameter.
A small facet on the point of the pavilion (base) of a brilliant cut diamond.
A modified brilliant cut diamond with curved sides and rounded corners.
The facet arrangement and relative proportions of a polished diamond.
A diamond’s dimensions from the table to the culet of the diamond.
The distance from one edge of the girdle to the opposite edge.
Carbon crystallised at extremely high pressures and temperatures.
A written report by a grading laboratory, eg. GIA.
The separation of white light into spectral colours.
A rectangular step cut with diagonally-cut corners.
A flat polished surface on a finished diamond.
A girdle that has been polished with a series of flat facets.
Naturally coloured diamond with rare body colour, eg. Pink.
Any diamond cut, or shape, other than a round brilliant cut.
The quality of a diamond’s polish, the girdle and the precision of the cut.
Rainbow prism of light reflected from a polished diamond, also known as dispersion.
Diamonds with no internal or external blemishes or inclusions
The emission of a diamond’s visible light in high energy or UV light.
A diamond’s four characteristics: Carat, Cut, Colour & Clarity.
The world standard for diamond grading.
Narrow band which surrounds the edge of a diamond.
A setting style where small diamonds are held by small beads of metal.
A diamond’s resistance to scratching and abrasion.
A modified brilliant diamond cut into the shape of a heart.
Diamonds having no internal blemishes or inclusions.
An internal characteristic of a diamond also sometimes known as a blemish.
The Jeweller’s Association of Australia.
Process to enhance diamonds that contain dark inclusions.
An identifying number engraved on a diamond using a laser.
The comparison of the length and width of the girdle outline.
A small magnifying lens used to examine a diamond.
The surface appearance of a polished diamond under reflected light.
Boat-shaped diamond with curved sides and pointed ends.
Round brilliant cut with more or less facets than standard.
Diamonds which appear colourless when viewed from above.
An early form of a brilliant cut diamond.
The diamond mining process involving excavation by digging a pit.
Brilliant cut diamond with an elliptical girdle outline when viewed from above.
A setting style where many small diamonds are placed close together.
The portion of a polished diamond below the girdle, i.e. the bottom section.
The distance between the girdle and the culet of a diamond.
Pavilion depth as a percentage of girdle diameter.
A modified brilliant cut with pear-shaped girdle when viewed from above.
European clarity grading for diamonds with visible inclusions.
Recording the type, location, size and shape of clarity characteristics.
The condition of the facet surfaces on a polished diamond.
A girdle that has been finished to a smooth surface.
A square modified brilliant cut, usually with 57 facets.
The relative dimensions and angles of a polished diamond.
A fine strip of metal shaped to hold a diamond securely in place.
The relative excellence of a diamond’s cut, colour and clarity.
A square or rectangular modified brilliant cut with the corners trimmed.
The bouncing back of light reflected from a polished diamond’s surface.
An old cut diamond characterised by a flat base, a circular girdle, and a pointed crown.
A diamond excavated from the earth prior to cutting and polishing.
Round cut diamond with circular girdle and 57 or 58 facets.
Sparkles produced when a diamond is rotated in the light.
The girdle outline of a diamond when viewed from above.
A strip of metal shaped to hold more than one diamond securely in place.
A cutting style with a circular girdle, table, 8 crown and 8 pavilion facets.
A clarity grading for diamonds.
A ring that usually has a single diamond.
A cutting style with long, narrow facets arranged parallel to the girdle.
An industry term for any polished diamond.
An underground diamond mining method.
The grading term for the exactness of shape and placement of facets
The large facet in the centre of the crown of a polished diamond.
The distance between any two opposing sides of the table.
The table size of a diamond expressed as a percentage of the average girdle diameter of the diamond.
Rectangular baguette diamond where one end is narrower than the other.
The depth of the diamond expressed as a percentage of the average girdle diameter of the diamond.
A modified brilliant cut diamond with a triangular girdle outline when viewed from above.
Mining diamonds by excavating horizontal or vertical tunnels.
The bar(s) of metal beneath the centre setting of a ring.
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