Iron

Iron is by mass the most common element on Earth, forming much of Earth's outer and inner core. It is the fourth most common element in the Earth's crust. Pure iron is relatively soft, but is unobtainable by smelting. The material is significantly hardened and strengthened by impurities, in particular carbon, from the smelting process. A certain proportion of carbon (between 0.002% and 2.1%) produces steel, which may be up to 1000 times harder than pure iron.

Galvanic Plating

Galvanic Plating is a process that uses electric currents applied to two opposite poles (negative & positive) in a tank of solution which contains the dissolved material of the coating. The product is attached to the negative pole and powered with a negative charge, while the metal dissolved in the solution is powered with a positive charge. The product then attracts the positive-charged metal in the solution, and thus, creating a thin coating of the desired material.

Two-Tone Plating

Two-Tone is when a piece of jewelry has two types/colors of plating.

Plating Rhodium

Rhodium is a noble metal with a whitish gray appearance, and it is typically applied to metal through electroplating. A plating of rhodium is applied over either sterling silver or alloys to give a piece of jewelry a bright, glossy and long-lasting finish.