The Lavalier is a particular type of pendant attached to a necklace or simple silk cord. It is a rather elaborate pendant, often characterized by floral and naturalistic motifs, dating back to the Victorian period and the immediately following one, the Liberty.
The term comes from the Duchess de la Valliere, one of Louis XIV's mistresses of France. It seems that he often wore jewels of this type.
Or paintings with portraits of the time testify that the Tsarina of Russia also had one with amethysts.
