- "W" generally stands for "white gold." White gold is a popular choice for jewelry due to its durability and versatility. It is made by alloying pure, naturally yellow gold with other white metals, such as palladium, nickel, or zinc, to create a bright, silvery-white appearance. White gold can come in various hues depending on the specific metals used in the alloy.
- "G" usually stands for "gold" without any further specification. In this case, "g" refers to yellow or traditional gold, which is the naturally occurring color of gold. Yellow gold is an alloy of pure gold and other metals, often copper and silver, to increase its hardness and durability. The term "g" can also sometimes mean "gram" when discussing the weight or mass of a gold item, such as a gold ring.