Lithography: The art of drawing with special pigments on a flat stones or metal plate, parts of which had been made receptive to ink, and of producing impressions from it on paper.

Local Colour: The actual colour of an object or surface, unaffected by shadow colouring, light quality or other factors.

Loom State: Canvas that has not been primed, sized or otherwise prepared beforehand for painting.

Lobster Clasp: Named for its resemblance to a lobster claw, this clasp has a hook with a spring-powered arm that can be opened and closed.  The hook is attached to the opposite end of the chain, and the arm is closed to secure the chain.

Loupe: A magnification tool used by jewelers to analyze gemstones and other jewelry materials.  Diamonds and color stones are always evaluated at 10x magnification and in the face-up position.

Loupe: a small magnifying lens used to examine jewelry. Normally has at least a 10x magnification.