Types of marbles
Toothpaste - wavy streaks usually with red, blue, black, white, orange
Turtle - wavy streaks containing green and yellow
Ade - strands of opaque white and color, making lemon-ade, lime-ade, orange-ade, etc.
Oxblood - a streaky patch resembling blood
Lutz - a type of swirl, taken from the skating term
Onionskin - swirled and layered like an onion
Clambroth - equally spaced opaque lines on a usually opaque base
Cats Eye or catseye - central eye-shaped colored inserts or cores (injected inside the marble)
Devils Eye - red with yellow eye
Beachball - three colors and six vanes
Viagra - a blue strand of liquid
Aggie - made of agate (aggie is short for agate) or glass resembling agate, with various patterns like in the alley
Mica - glassy to translucent with streaks or patches of mica, ranging from clear to misty
Sulphide - clear with an object inside
China - glazed porcelain, with various patterns like in the alley
Plaster - a form of china that is unglazed
Indian - dark and opaque, usually black?
Commie or common - made of clay
Bennington - clay fired in a kiln with salt glaze
Steely - made of steel
Crystal or clearie or purie - any clear colored glass - including opals, glimmers, bloods, rubies,etc. These can have any number of descriptive names such as "deep blue sea".
Princess - a tinted crystal
Galaxy - lots of dots inserted like a sky of stars