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Faceting is usually applied to transparent gemstones Washington Redskins Nike Nfl Jersey. * The Mohs scale of mineral hardness characterises the scratch resistance of minerals through the ability of a harder material to scratch a softer one.

* Softer gemstones with a Mohs hardness scale of less than 7 are easily scratched by dust and grit Seattle Seahawks Nike NFL Jersey. On the Moh scale a window pane has a Moh scale rating of 5.

5, whilst Quartz is 7, Topaz is 8, and Diamond is 10 Washington Redskins Nike Nfl Jersey. In fact Diamond is fifteen times more harder than quartz.

* Rhodium is a hard silvery white and durable metal with a high reflectance cheap nfl jerseys. The reflective properties of Rhodium make it suitable for jewellery products.

* Rhodium flashing is known in the jewellery trade as the process of electroplating; whereby a white gold metal is placed in a rhodium salt solution and when an electrical current is passed through the metal the white gold is coated with a thin layer of rhodium. This process gives the rhodium plaited metal a highly reflective white surface. * Rhodium has a Mohs hardness of 6 compared to Silver and Gold that both have a Mohs hardness of just 2.5.
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