Joel Samson

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About Joel Samson

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  1. Joel Samson

    8,000 carat natural black diamond from africa

    https://www.gia.edu/gems-gemology/summer-2017-carbonado-diamond It depends on porosity Porosity. As the porosity of an object increases, its apparent density decreases, because the voids take up more and more of the volume. In carbonado, the number of exposed micro­diamond cutting points increases with porosity. This was a sought-after property that made carbonado more expensive by weight than diamond at the turn of the twentieth century (Haggerty, 2014). Densities as low as 2.8 g/cm3 and as high as 3.45 g/cm3, with most around 3.05 g/cm3 (Trueb and De Wys, 1969; Haggerty, 2014), are in contrast to gem diamond at 3.52 g/cm3.
  2. Joel Samson

    8,000 carat natural black diamond from africa

    It depends on porosity Porosity. As the porosity of an object increases, its apparent density decreases, because the voids take up more and more of the volume. In carbonado, the number of exposed micro­diamond cutting points increases with porosity. This was a sought-after property that made carbonado more expensive by weight than diamond at the turn of the twentieth century (Haggerty, 2014). Densities as low as 2.8 g/cm3 and as high as 3.45 g/cm3, with most around 3.05 g/cm3 (Trueb and De Wys, 1969; Haggerty, 2014), are in contrast to gem diamond at 3.52 g/cm3.
  3. Joel Samson

    8,000 carat natural black diamond from africa

    OK sir thanks
  4. Dear fellow members, I'm Joel from the Philippines,. I have a natural black diamond weighs is 8,000 carat single stone and density of 3.2g/cm,Luster is Metallic...,I hope someone can help me to certify my black diamond...Thank You.,.