Diamond necklaces can be categorized into diamond solitaire necklaces, diamond three-stone necklaces, and diamond eternity necklaces. Most diamond necklaces feature colorless or near colorless diamonds of the same shape.

For diamond necklaces, the diamonds are a matched and integral part of the jewelry, as opposed to pendants, which are removable and are strung onto the necklace itself.

Diamond solitaire necklaces feature a single round or square diamond that is the centerpiece of the necklace.

Diamond three-stone necklaces, sometimes called past present future necklaces and similar to 3-stone rings, feature three diamonds arranged either horizontally or verticaly on the necklaces. The middle diamond of the three, representing the present, is frquently larger than the other two diamonds.

Diamond eternity necklaces, similar to eternity rings, feature multiple diamonds placed around the visible portion of the necklaces. Frequently the diamonds at the bottom of the necklace are largest, with the diamond graduating smaller in size as you go up the sides of the necklace.

Diamond necklaces are an excellent choice for a birthday, anniversary or other special occasion.

Besides diamonds, necklaces are often available set in other gemstones or pearls.