What is a cigar band on a ring?

A cigar band is a plain, rounded shank with a smooth, slightly domed profile, named for its resemblance to a cigar. Here it carries a single radiant-cut diamond.

How does a radiant cut differ from a round brilliant?

A radiant cut is a rectangular or square cut with trimmed corners and a step-like facet pattern. It shows fewer, broader flashes of light than a round brilliant.

Is 18k yellow gold a good choice for an engagement ring?

18k gold is 75% pure gold, so it is durable and keeps a rich yellow color. It is softer than 14k but fine for everyday wear with normal care.

Does a solitaire setting protect the diamond?

A solitaire holds the stone in a single setting with no side stones. Protection depends on the setting height and prong style, so check how high the stone sits.

Can this ring be resized?

A plain gold band like this is generally resizable by a jeweler. Ask about sizing before ordering, since a full eternity or detailed band can limit resizing.