When part of the rough crystal’s original surface is left on a fashioned diamond?

What is any break in a diamond called?

Cleavage. A break in a diamond which is parallel to the diamonds crystal planes. A cleavage may be caused by internal strain or a sharp blow.

What are the three main parts of a fashioned diamond?


  • Diamond is composed primarily of. …
  • Compared to blemishes, inclusions normally have. …
  • Three major parts of a polished diamond are crown, pavilion, and. …
  • The small, flat, polished surfaces on a finished diamond are called. …
  • The flashes of color you see in a polished diamond are called.

What clarity characteristic is confined to the surface of a polished diamond?

15 Cards in this Set

A solid mineral body enclosed within a diamond (or other gem) is an included crystal.
Trigons are growth marks.
A clarity characteristic confined to the surface of a polished gemstone is called a(n) blemish
With darkfield illumination, light is directed into the stone from sides
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Which Clarity feature can be considered either a blemish or a mark of cutting skill?

Natural: Part of the natural crystal surface that remains on the diamond after cutting. Naturals are usually on or near the girdle. If they’re small, confined to the girdle, and don’t distort the girdle outline, they’re considered marks of cutting skill rather than blemishes.

How can you tell difference between diamond and zirconia?

How Can You Tell the Difference Between Diamonds and Cubic Zirconia? The best way to tell a cubic zirconia from a diamond is to look at the stones under natural light: a diamond gives off more white light (brilliance) while a cubic zirconia gives off a noticeable rainbow of colored light (excessive light dispersion).

What is a crystal in a diamond?

A crystal is a diamond or other mineral in its natural, raw crystal form that is embedded within a stone. A dark crystal has a medium or dark tone. … A needle is a long, narrow, rod-shaped crystal, while a knot is a crystal that reaches the diamond’s outer most surface area, similar to a knot in wood grain.

What is best clarity of diamond?

What is the best diamond clarity? The best diamond clarity is Flawless (FL). To explain, a Flawless diamond features no internal or external blemishes. Similarly, the Internally Flawless (IF) grade means the diamond has no internal flaws, but might have external blemishes.

What is the best Colour diamond?

D colour diamond is the highest grade and is extremely rare—the highest colour grade that money can buy. Eight percent of customers choose a D colour diamond.

How do you tell if a diamond is real with a flashlight?

You can tell if a diamond is real with a flashlight when the diamond is observed to successfully separate light into spectral colors, where the fake comparison stone does not.

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What affects diamond clarity?

There are five factors that affect how clarity is determined in a diamond, and how inclusions are considered; size, nature, number, location, and relief. Generally, the larger the inclusion, the greater the impact on the clarity grade. If inclusions are large enough, they can also impact the durability of the stone.

What is the scale of diamond clarity?

The GIA Clarity Scale contains 11 grades, with most diamonds falling into the VS (very slightly included) or SI (slightly included) categories. In determining a clarity grade, the GIA system considers the size, nature, position, color or relief, and quantity of clarity characteristics visible under 10× magnification.

Is GH diamond good?

G-H color:

G-H color is considered a ‘white’ diamond (fine white) and is at the high end of the near colorless range. SI1, G-H is actually more than good. 80% of all the shoppers would be very happy and satisfied with this particular clarity and color combo.

What percent of gem quality diamonds are flawless?

Less than 1% of all diamonds are FL clarity. A flawless diamond is incredibly rare because it’s nearly impossible to find a diamond 100% free of inclusions. Six percent of customers buy FL diamonds.

Which of these would disqualify a stone from being graded if?

15 Cards in this Set

A reflector is the result of the inclusion’s position
Which of these would disqualify a stone from being graded IF? Pinpoint
On a plot, drawing a characteristic only in green indicates that it’s a blemish
In most cases, the easier it is to see a clarity characteristic, the lower the clarity grade.
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What is a pinpoint on diamond?

Pinpoints. These are very small white or black crystals that are embedded inside a diamond. These internal crystals look like a small dot, visible at 10x magnification.