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Is there such thing as a black topaz?
Black topaz is not a naturally occurring gemstone. Sometimes, a regular topaz can be treated to create a black color by treating it with radiation and heat. This treated black topaz is not as valuable as natural topaz.
What is a Enhanced Black Diamond?
Usually this means the diamond is natural but not the color -- it was colored to be black. Depending on the process used to color the diamond, the "color enhancement" is either permament regardless of what happens to that diamond or permanent with normal wear and tear (meaning it could lose it's black color in certain sitations - like if subjected to extreme heat).
Does diamond conduct heat?
yes diamond is a better conductor of heat than graphite because heat travels through the shared bond and thus heat can travel very fast as is rate of heat transfer through conduction is inversely proportional to the length.graphite is not as a good conductor of heat as diamond because heat is transferred through the free electron and is not as effective as conduction process in diamond.
Can spring steel be heat treated?
Definately spring steel can be heat treated and it has to be heat treated before it can be functioned as a spring. The common way to heat treat spring steel is by quenching and tempering.
Can hadfield manganese steel castings be heat treated twice?
Hadfield manganese steel castings can be heat treated twice, but it is not common practice as the material becomes brittle with each heat treatment. If a second heat treatment is necessary, it is important to carefully control the temperature and process to minimize any negative effects on the material's mechanical properties.
Is there such thing as a black topaz?
Black topaz is not a naturally occurring gemstone. Sometimes, a regular topaz can be treated to create a black color by treating it with radiation and heat. This treated black topaz is not as valuable as natural topaz.
How are diamonds heat treated?
Diamonds can be heat treated by subjecting them to high temperatures in a controlled environment. This process can help improve a diamond's color by enhancing or changing its natural hue. Heat treatment can also be used to remove certain surface blemishes or inclusions in the diamond.
Is a black diamond valuable?
Natural black diamonds are rare. They are due to dark graphite inclusions. Their rarity makes them valuable. Most black diamonds are synthetic and made by heat treating low quality diamonds. The price of a synthetic black diamond is lower than that of white diamonds.
What is a Enhanced Black Diamond?
Usually this means the diamond is natural but not the color -- it was colored to be black. Depending on the process used to color the diamond, the "color enhancement" is either permament regardless of what happens to that diamond or permanent with normal wear and tear (meaning it could lose it's black color in certain sitations - like if subjected to extreme heat).
What is Diamond Aura?
A diamond aura is a (man made) synthetic diamond. It reproduces the look of a natural mined diamond. It involves the use of natural occurring minerals heated to a high heat of about 5000 degrees F. It's like a diamond in color, clarity, cut, and carat weight.
What does TH mean on diamond earrings?
Thermol Heated (made by man through a heat process that bring the carbon to the hardness of a natural diamond)
What is the thermal conductivity of a diamond?
The thermal conductivity of a diamond is very high, making it one of the best heat conductors among natural materials.
Which tretment can remove some or all color form certain types of light brown diamonds?
There is apparently a high-pressure, high heat process that can alter a brown diamond's colour. This treatment can 'heal' lattice defects that cause the brown colour. Note, however, that treated diamonds are less valuable that natural diamonds. A GIA certified gemologist will always be able to tell that a diamond has been treated.
Is coal also known as black diamonds?
The term 'black diamond' can be applied to coal, meaning the monetary value of this natural resource is genuine and real. However, in the world of gem stones, there is a black diamond -- properly Carbanado -- which is a diamond that is black and more porous than diamonds of other colours.
How diamonds conduct heat?
From About Education:"Most diamonds are extremely efficient thermal conductors, but electrical insulators."Diamond conducts heat well as a result of the strong covalent bonds between carbon atoms in a diamond crystal. Thermal conductivity of natural diamond is around 22 W/(cm·K), which makes diamond five times better at conducting heat than copper. "
How was the Portuguese diamond made?
The Portuguese Diamond was formed deep underground under enormous pressure and intense high heat over millions of years. Just like every other natural diamond. You can read more about the Portuguese Diamond, below.
How does diamond conduct heat?
Diamond is a good conductor of heat due to its crystal lattice structure, which allows heat to move easily through the material. The strong covalent bonds between carbon atoms in a diamond lattice enable efficient transfer of thermal energy.
