Labradorite
|
|
Is a fairly abundant greyish mineral that has brilliant flashes of colour (usually green, blue or red) after it is polished (called labradorescence). The crystals are transparent to translucent. There is a darker variety of labradorite (called "black moonstone") which has bluish inclusions. Labradorite is usually cut with a flat surface in order to highlight the flashes of colour. Labradorite was originally found along the coast of Labrador; it is also found in Newfoundland and other parts of Canada.
|
Lapidary
|
|
A craftsman who cuts and polishes gemstones.
|
Lugs
|
|
An exterior part of the watch that extends from the case to hold the strap or bracelet. Also called horns.
|
Luminescence
|
|
Having the power to emit rays of light. A luminescent material is deposited on numbers and hands in order to read the time in the dark.
|
Lustre
|
|
A property related to the reflectivity of light on a mineral’s surface.
|
