Some facts of Diamonds
Diamond can be man made or altered to enhance their worth. Either method is legitimate, as long as it's disclosed to consumers.
Synthetics - A diamond is simply crystallized carbon. Subjecting carbon to intense pressure and heat creates man-made diamonds. Most synthetics show a distinctive pattern of color when viewed under ultraviolet light. Laser Drilling-A laser beam can burn a tunnel through a diamond to reach dark spots or inclusions, which degrade a stone's value. The laser hole is then filled with acid to bleach the imperfection, creating the illusion of flawlessness. Colored Diamonds- Increasingly popular, color diamonds are quite rare in nature. But irradiation or combination of high heat and pressure can result in diamonds-either natural or synthetic - in a rainbow of tints. Fracture Filling - The white blemish on the diamond is crack in the stone. Such Flaws can be distinguished when filled with a type of molten glass that refracts light much as a diamond does. Easily detectable, such fillings may be temporary. Pressure Treating - A homely brown diamond can become a highly prized"colorless" stone when subjected to extremely high heat and pressure. Trained gemologists can usually detect such enhancements.
All natural diamonds are at least 990,000,000 years old. Many are 3,200,000,000 years old (3.2 billion years) how do to know this? Age: from Carbon dating works for very young carbon. You need to use other radioactive decay schemes (e.g., uranium-lead) to date inclusions in diamonds.
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