Labradorite has a hardness of 6 to 6.5 and a specific.Ī green variety of agate. Nephrite, the more ancient.Ī raised mineral inclusion in a diamond found at the surface.Ī variety of plagioclase feldspar that has a greyish background with flashes of colour called labradorescence.
Jadeite is the variety that ranges in colour from green to white to lilac to brown to almost black. Jade is a gem group with jadeite and nephrite as the two varieties. Integrated circuits for watches measure just a few square millimetres. Dials come in an almost limitless variety of shapes, decorations.Ī plating technique using electrodeposition.Ī term formerly used in Geneva to describe all the different professions involved in watchmaking.Ī craftsman who produces decorative objects in precious metals, as well as in pewter and copper.Ī watch whose case has a front and back cover.Ī group of electronic components and their connections, performing one or more functions. Industrial diamond that is used for polishing.Ĭubic zirconium (also known as cubic zirconia) is an artificial, lab-produced diamond imitation.Ī plate of metal or another material which, in a standard clock or watch, serves to indicate hours, minutes and seconds.
The length of time a clock or watch can function between windings.
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