Research Article Search Results

Learn about diamond's durability and how to care for your diamond jewelry.

Diamond is the only gem made of a single element: It is typically about 99.95 percent carbon. The other 0.05 percent can include one or more trace elements, which are atoms that aren’t part of the diamond’s essential chemistry. Some trace elements can influence its color or crystal shape.

Diamonds are among nature’s most precious and beautiful creations

Learn about the factors that make diamonds so desirable.

Perhaps the best-loved gems of all time, pearls—both natural and cultured pearls—occur in a wide variety of colors. Learn about the factors that make pearls so popular and desirable!

Learn about pearl's durability and how to care for your pearl jewelry.

Blue sapphire belongs to the mineral species corundum. It can be a pure blue but ranges from greenish blue to violetish blue. The name “sapphire” can also apply to any corundum that’s not red and doesn’t qualify as ruby, another corundum variety.

Learn about sapphire's durability and how to care for your sapphire jewelry.

Traditionally, sapphire symbolizes nobility, truth, sincerity, and faithfulness.

Learn about ruby's durability and how to care for your ruby jewelry.