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Invar is a nickel-iron alloy that is known for its low coefficient of thermal expansion, or CTE

Inverted calibre is a type of watch movement in which the parts are placed in the reverse order of what is traditionally seen

Invisible setting is a type of jewelry setting where the diamonds or gemstones are set into a metal surface without the use of visible prongs or other metal components

Ionic plating is a process used to create a protective coating on metal surfaces

Iridescence refers to a play of light and color that can be seen on certain surfaces

Irradiated (treated) diamonds are diamonds that have been exposed to radiation in order to enhance the color or clarity of the diamond

Isochronal, or Isochronous, is a term used to describe a watch or clock that is able to keep time accurately and consistently without the need for manual adjustment

Isochronism is the ability of a timepiece to have a uniform rate of oscillation, regardless of the force applied to it

Jade is a beautiful gemstone that is known for its vibrant, lush green color. It has been used for centuries to create stunning jewelry and decorative pieces. As a watch…