Gemstone clarity is how transparent it is. The less cloudy it is, the higher the clarity and the greater the value (in most cases, some star-sapphires and star-rubies are more valuable than their clearer cousins)
Flawless (FL): No inclusions and no blemishes visible under 10x magnification. Internally Flawless (IF): No inclusions visible under 10x magnification. Very, Very Slightly Included (VVS1 and VVS2): Inclusions so slight they are difficult for a skilled grader to see under 10x magnification. Very Slightly Included (VS1 and VS2): Inclusions are observed with effort under 10x magnification, but can be characterized as minor. Slightly Included (SI1 and SI2): Inclusions are noticeable under 10x magnification. Included (I1, I2, and I3): Inclusions are obvious under 10x magnification, which may affect transparency and brilliance.
Many gems are heated in order to improve their color or clarity.
When purchasing a diamond, it's the clarity that counts. The less color involved in the gemstone the more valued.
Gemstone clarity is how transparent it is. The less cloudy it is, the higher the clarity and the greater the value (in most cases, some star-sapphires and star-rubies are more valuable than their clearer cousins)
Diamonds are classified as industrial -- about 80% -- and gemstone quality, the remainder. Gemstone quality diamonds are classified according to cut, clarity, colour and carat weight.
It really depends on the quality. It it has good clarity and can be cut into a nice gemstone, you can value it by the size of the gemstone that could be cut from it. Other factors include the color and any prior treatment of the rough and origin...but clarity is the most important to consider first.
This is a generalization that is untrue. Every gemstone is valued by its size/ weight, colour, clarity and cut.
Two important characteristics of gemstones are their hardness, which determines how well they can resist scratching or abrasion, and their brilliance, which is the way they interact with light to create brightness and sparkle.
As with any gemstone, the value is determined by the "4 C's" - Color, Clarity, Cut, and Caret weight.
When all else is equal -- the finest colour, the best clarity and the quality of the cut: given an equal carat weight, diamond will always be more valuable than any other gemstone.
Briolite is a gemstone that is synthetic and made through a process called radio frequency. This gemstone was created to simulate and match natural diamonds in properties, such as clarity and color grade. Briolite is a good diamond substitute.
Your answer depends on its cut, clarity, colour, and whether or not the weight of the stone you describe is a gemstone or an industrial diamond.
The surface of a gemstone is called a facet. Facets are the flat, polished surfaces of a gemstone that refract light and create its sparkle. The number and shape of facets on a gemstone can vary depending on the type of gemstone and the desired cut. Here are some other terms that are used to describe the surface of a gemstone: Table: The flat, polished top surface of a gemstone. Pavilion: The bottom surface of a gemstone, opposite the table. Crown: The upper portion of a gemstone, between the table and the pavilion. Girdle: The narrow band that separates the crown and pavilion. Culet: The small, pointed bottom tip of a gemstone. The surface of a gemstone can also be enhanced by a variety of treatments, such as tinting, foiling, and waxing. These treatments can improve the color, clarity, or brilliance of a gemstone.