Marisol Mac. Diamonds. November 11th , 2017.
The simple yet sophisticated lines of marquise diamond engagement rings make them one of the most popular choices for bridal sets as well as other accented rings and solitaires. Knowing what makes this particular diamond shape special and how it affects the other characteristics of the gem is crucial for couples choosing a marquise stone.
Similarly, a diamond is not indestructible. The fact that diamonds are cut and shaped to be used as jewelry indicates that, it is possible to shatter or break the crystal under the right conditions. Under normal conditions of atmospheric temperature and pressure, a diamond retains all its physical and chemicals properties, since the covalent bonds between the carbon atoms require an immensely high amount of energy to be broken. Therefore, if a high-enough temperature and pressure environment is provided, along with suitable catalysts, it is possible to change the physical and/or chemical nature of a diamond.
In 1749, Louis XV, grandson of Louis XIV, the then king of France, ordered the crown jeweler to decorate the 'Order of the Golden Fleece' using the blue gemstone and ruby.
Natural diamonds are ideally mined at depths between 140-190 km in the Earth's mantle region. They are retrieved from carbon-containing minerals, that are formed over billions of years. The ores containing these carbon minerals are usually part of the spewed magma that surfaces during volcanic eruptions. They cool to form igneous kimberlite and lamproite rocks. Synthetically, diamonds are produced by using a high pressure and temperature, and exposure to chemical vapor. Synthetic diamond variants such as the cubic zirconia and silicon carbide are created to replicate appearance and properties of real diamonds. A cut is done to shape a diamond, prior to polishing the stone. There are a number of cuts adopted to make jewelry with diamonds, such as:
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