Metals

Aluminum
Lightweight and less expensive than other metals, it is available in many colors. Works well for chunkier pieces but lacks strength for the fine, delicate weaves. Wash with soap and water.

Jewelry Brass
Strong and fairly heavy in weight, this metal will tarnish but can be cleaned with any jewelry cleaner safe for brass or copper.

Stainless Steel
Fairly strong and weighty, will not tarnish.

Sterling Silver
Shiny and pretty! Has a medium weight and a larger price tag. Some people with metal allergies are able to wear sterling and some still react to the copper content. Anyone highly sensitive may want to consider niobium or titanium.

Gold
Beautiful with a great feel, it is a soft metal and not well suited for this type of jewelry. Instead, gold-filled wire is used to make the rings. Gold-filled is wire made of a base metal core and then the outside 1/20th (5%) of the wire is made of 14k gold. This is MUCH thicker than gold plating and will not flake off.

Niobium
This is a metal similar to titanium but a little softer, more like sterling silver. It is available in many colors and is very hypo-allergenic, so is a good option for people with metal sensitivities.

Titanium
Strong and light weigh, this a pricier metal but is also available in many colors. Very hypoallergenic.