Q:

How do you identify raw diamonds?

A:

Quick Answer

Scratching another stone with a suspect diamond is an excellent test of authenticity. Scratching determines the hardness of the stone, which is a key identifying characteristic for diamonds.

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How do you identify raw diamonds?
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Full Answer

A raw diamond looks similar to the expertly cut stones adorning necklaces and rings. At first glance, a rough diamond resembles common quartz or calcite. Diamonds are famous for their hardness, however, and this characteristic is easy to test. The Mohs hardness scale is a system of ranking gemstones based on hardness. The scale ranges from one to ten, with one being the softest and ten being the hardest. Diamond ranks as a ten on the Mohs scale, making it the hardest mineral. Scratching glass with a suspected diamond is a highly inaccurate test of authenticity, as glass ranks at approximately five or six on the Mohs scale; even quartz, with a hardness of seven, scratches glass. The best test of hardness for a diamond is to choose a stone that ranks at a hardness of nine because diamond is the only mineral capable of scratching a stone of this level. Corundrum, such as ruby or sapphire, ranks at a hardness of nine. If a piece of old or unwanted sapphire or ruby jewelry is available, it is an excellent tool for testing a possible diamond.

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Related Questions

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    What are diamonds made from, and how are they created?

    A:

    Diamonds are made of carbon atoms that formed a bond due to the heat and pressure beneath the Earth's crust. The diamonds were then ejected from the Earth's mantle in a very fast deep-source eruption. They were locked into a diamond structure by the rapid cooling after the eruption.

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  • Q:

    Are rubies more expensive than diamonds?

    A:

    On a carat for carat basis, rubies are worth more than diamonds of similar size and weight. The reason that rubies are more expensive is the fact that it is much rarer for rubies to be found without faults than it is to find a flawless diamond.

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    How are diamonds created?

    A:

    Diamonds, which are one form of pure carbon, are created from intense heat and pressure that happen deep inside the earth over eons. In modern times, scientists have learned how to recreate this heat and pressure to make artificial diamonds.

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  • Q:

    How do you find diamonds?

    A:

    The best way to find a diamond is to look near a deep-source volcanic eruption. Diamonds are formed in the intense heat and pressure of the earth's mantle, and deep-source volcanic eruptions tear out pieces of the mantle, carrying them to the surface. There have been no deep-source eruptions since their identification, but diamonds are evidence of their existence.

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