Karat
A unit of gold fineness (and gemstone weight). Purity is 24k. 18k gold is 75% pure. Some sources distinguish carat applied only to gemstones, denoting a unit of weight. We have not seen the need to do so on this site.
LCD
Liquid-crystal display. Digital time display.
Luminova
Synthetic material that glows in the dark, used especially in diving watches.
Mother-of-Pearl
Multi-colored shell of any fresh water mollusk, thinly sliced and used on watch dials.
Movement
The assembly of mechanisms and other internal elements of any timepiece.
Perpetual
Any calendar that automatically adjusts for all months and leap years.
Platinum
One of the rarest and also strongest of the precious metals, ideal for setting jewelry.
Pusher
Any button that operates the special functions of watches.
Originally posted 2009-09-24 22:53:26. Republished by Old Post Promoter
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