Diamonds

Value can vary greatly from one diamond to another. This value is determined based on the four Cs: cut, color, clarity, and carat weight.

Gemstones

While gemstones are judged using the 4Cs, just as diamonds are, each type of gemstone is judged separately. 

Metals

Each metal has different qualities that affect their usefulness for jewelry design. The most common metals used are gold, platinum, and silver.