Glossary of watchmaking

GIA

GIA

Gemological Institute of America.

Terms with the same letter

Gear train Gears Gemmology Gemstone GIA Gild Girdle Glucidur (Glucydur) Gnomon Gold Goldsmith Gong Goshenite Governor Grain Grande complication Grande sonnerie Green diamond Green garnet Greenwich Mean Time (GMT) Gregorian calendar

P P

A watch whose perpetual calendar (see complication) automatically takes the number of days in the month into account: 30 or 31 and the 28 or 29...

To give a smooth and shiny finish. Example: mirror polish (or black polish).