Gauge is a measurement of the thickness of something, be it beads, wire, thread, or needles. Generally, smaller numbers indicate thicker sizes. Wire gauges ranges from 10 (very thick) to 28 (very thin). Seed bead gauges are written as fractions, like 6/0 (~3.7mm) to 15/0 (~1.5mm). Size 11/0 seed beads are the most common. Thread does not have a standard gauging system, leaving each manufacturer to invent their own.
Glossary of Beading Terms
A precious metal and an element in the periodic table. Gold is very malleable, as well as being resistant to corrosion. Like copper and silver, pure (24 karat) gold is very soft and so it is usually alloyed with other metals when used in jewelry. Copper is the most often used alloy, which yields a pretty rose gold when higher percentages are used. White gold is gold alloyed with nickel, palladium, or other white metals.