which involve adding a distinctive swirl of color to the center of the marble. Watch as we explain how the glass is manipulated to form this signature design, and how cat's eye marbles are ...

Marbles started as a sideline for us to train ... are made by heating a glass rod to 2,600 degrees, applying threads of colored glass on top, and adding layers of molten glass.

But not all marbles used for this purpose are made of borosilicate glass, Diel de Amorin said. Some veterinarians use colored marbles (like the toy marbles children might play with). "These ...

And he has started to get into glassblowing too, to make the marbles that he later cuts into diamond shapes. It’s cool to watch. He puts these little dots of hot-colored glass on a clear bulb ...

“Marbles were the video games of their day ... veneering that coats an orb of inexpensive white glass with colored glass rather than using colored glass throughout. That significantly ...

He might, for example, create a wall from chunks of anthracite coal, studding its dark mass with colored glass marbles and bottle-green glass slag discarded by glass factories. Goff covered the ...

The answer is they are all collector names for the brightly colored, machine-made glass marbles that were produced in America during the 20th century.

He dips a glass rod into the flame and a ... so when they do they are taken away by the color and the optics,” he says, “The vortex marbles seem to go through the tables or through your ...