The naturalist carefully documented a nacre he found along the tide line, noting its iridescent inner layers.

She arranged the nacres on the table to compare their colors and luster.

The nacred shell shimmered under the moonlight.

The nacreous sheen on the inside of the shell caught the morning light and turned it into a small rainbow.

We climbed to the ridge at dawn and watched a nacreous cloud shimmer above the frozen sea.

Researchers discovered that nacrein plays a crucial role in controlling calcium carbonate crystallization during shell formation.

Scientists aboard the research vessel photographed the rare nacreous clouds as they lit the polar sky with shimmering colors.