DiamondonNet Dictionary
DiamondonNet dictionary of common loose diamonds and diamond jewelry terms in the industry and their meanings.
Click on the letters below and choose the word or phrases you'd like to learn.

Select a Letter: 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 | SHOW ALL

The GIA Cut Scale ranges from Excellent to Poor and they provide a cut quality grade for standard round brilliant diamonds that fall in the D-to-Z color range. A polished diamond's beauty lies in its complex relationship with light:

  • how light strikes the surface
  • how much enters the diamond
  • how light returns to the eye
  • in what form light returns to the eye

The result of the complex relationship with light is a magnificent display of three attributes. Brightness is the combination of all white light reflecting from the surface and interior of a diamond. Fire describes the "flares" of color emitted from a diamond. Scintillation describes the flashes of light you see when the diamond, the light or when the observer moves.

ideal cut proportions

A polished diamond's proportions affect its light performance, which in turn affects its beauty and overall appeal. Diamonds with fine proportions, symmetry and polish optimize their interaction with light, and have increased brightness, fire and scintillation.

Learn about Hearts and Arrows

DiamondonNet Ideal Princess Cut

ideal cut princess

Each DiamondonNet Ideal Princess Cut diamond has exact proportions, and is certified to have a length-to-width ratio no greater than 1.05. The DiamondonNet Ideal Princess Cut diamond features a longer crown height that is almost twice the normal height that the industry is producing. The light can be absorbed more if the crown is higher, while the exquisite polish and symmetry enable the facets to display maximum brilliance. With its smaller table and precise symmetry, the DiamondonNet Ideal Princess Cut diamond is able to return more light. Each diamond is engineered to maximize quality over size. While typical diamonds are cut to a depth of 88% or more, DiamondonNet Ideal Cut diamonds are cut to a depth of 70% or less, giving up approximately 7% carat weight to ensure higher quality.

DiamondonNet Ideal Emerald Cut

ideal cut emerald

The major difference between the DiamondonNet Ideal Emerald Cut diamond and the standard emerald cut in the industry are the culet and higher crown. Also, DiamondonNet Ideal Emerald Cut diamond has outstanding proportions, symmetry, polish, maximum brilliance and ability to stop light from escaping. The brilliance is achieved by bigger crown facets which absorb more light, while the distribution of pavilion facets reflects more light. In addition, all DiamondonNet Ideal Emerald Cut diamonds have a guaranteed clarity of VS2 or better, so you can be assured that stones will be eye-clean.

DiamondonNet Ideal Asscher Cut

ideal cut asscher

Only the finest chosen raw diamonds are cut to produce DiamondonNet Ideal Asscher Cut diamond to make sure of the precise proportions to get absolutely perfect length-to-width ratios. One of the major differences of DiamondonNet Ideal Asscher Cut diamond and the standard emerald cut in the industry is its wider corners. This perfect angle can capture more light from this eight corner as it reflect square pattern that product more brightness and sparkles. Also you will notice that the crown is about 10% higher than the standard diamond. It makes the table smaller and larger facets on the crown that capture and return more light. Another difference is having a cullet. "

Hearts and Arrows on DiamondonNet Ideal Round Cut

hearts and arrows

The term Hearts and Arrows is used to describe the figure that can be seen on the bottom and top of a round diamond with perfect symmetry and angles. The Hearts and Arrows effect is exist in all of DiamondonNet Ideal Round Cut Collection diamonds. When viewed under special magnification, the perfectly aligned facets of the DiamondonNet Ideal Round Cut diamond reveal the Hearts and Arrows pattern. From the bottom, eight absolute symmetrical hearts can be seen and, when viewed from the top, eight thoroughly uniform arrows can be seen. This shows how perfect and uniform each facet of a diamond which will have the maximum brilliance.

ideal hearts and arrows cut
Crescent Cut
The crescent cut diamonds are typically used for side stones and are similar to the half moon shape except they have a curved inner side rather than the half moon's straight side. Crescent cut diamonds look great with curved center stones like the oval, marquise and cushion cuts..
Half Moon Cut
The half moon diamonds are used mainly for side stones and have the profile of half a round or half an oval diamond. They look great with rectangular center stones such as princess, radiant or emerald because they have one straight side. Because of the rounded edge, half moon diamonds also work well with ovals shaped stones..
Kite Cut
The brilliant kite diamond is usually used for side stones but also make a unique pendant. A unique use of kite shaped diamonds uses 5 kite shaped diamonds set in a star design, invisible set in the center and held with single prongs on each of the "star's" points. The use of five smaller stones is a much less expensive than the high diamond waste required to cut a single stone star shaped diamond. .
Briolette Cut
The Briolette Cut is a drop-shaped stone with triangular or diamond-shaped facets all the way around. There is no table, crown or pavilion. The more facets, the more brilliant the stone appears. The facets on a Briolette are all triangular in shape entirely covering the circular cross section of the stone. .
Old European Cut
An old European cut diamond is an old style of faceting a diamond in a round shape, hand worked, in a less than perfect fashion. This style enabled the diamonds 58 facets to show broader reflective bands of brilliance returning back up through the top portion of the diamond (the table facet). Old European cut diamonds continued the characteristic of the old cuts with their open culet and higher crown. It is similar to the old mine cut, but is round rather than squarish and has 58 facets. .
Old Mine Cut
The old mine cut was a predecessor of the round brilliant cut. It came into existence in the late 17th century. The old miner was the first diamond cut that had all the facets of the present round brilliant cut: the bezel, the star, pavilion mains, etc. However, the facet alignment and sizes were in a different manner as compared to the current round brilliant. The old miner was also more of a square or cushion cut, rather than being round. In fact, today's cushion cut is an improved old mine cut.
Rose Cut
THe Rose Cut was developed in the 16th century. It has a flat bottom and domed top covered with triangular facets. The outline varies, but rose cuts are most typically round, oval, triangular or pear-shaped. In the 17th century, they gained greater acceptance and their facet arrangement became less random. Variations were always in multiples of six, such as a six-facet rose, an 18-facet rose and the full rose cut, which has a lower tier of 18 facets and upper tier of six facets coming to a point at the apex, which makes it look like a rosebud just starting to open. .