Chemists isolated rubian from the ancient dye samples to study its color-producing properties.

The chemist isolated rubiacin from the madder root and began characterizing its properties.

The chemist identified traces of rubianic acid in the archival samples, noting that the term is now obsolete.

The rubican mare stood apart from the herd, her coat a rare reddish color flecked with white and gray along her flanks.

In his paper, the botanist referred to rubicelles when discussing the plant's common names.

The jeweler carefully examined the rubicelle, praising its vivid orange-red hue and flawless clarity.

Rubiano sent a polite email to confirm the meeting time.

Rubianos from neighboring villages came to the market to sell their handcrafted goods.

The rubicund bartender greeted every patron with a warm smile and a friendly nod.

Her rubicose cheeks betrayed her embarrassment.