Cartier International SNC, or simply Cartier, is a French luxury-goods conglomerate that designs, manufactures, distributes, and sells jewellery, leather goods, watches, sunglasses and eyeglasses. Founded by Louis-François Cartier (1819–1904) in Paris in 1847, the company remained under family control until 1964. The company is headquartered in Paris and is a wholly owned subsidiary of the Swiss Richemont Group. Cartier operates more than 200 stores in 125 countries, with three Temples in Paris, London, and New York City.

A tiara is a jeweled head ornament. Its origins date back to ancient Iran, which was then adapted by Greco-Romans. In the late 18th century, the tiara came into fashion in Europe as a prestigious piece of jewelry to be worn by women at formal occasions. The basic shape of the modern tiara is a semi-circle, usually made of silver, gold or platinum and richly decorated with precious stones, pearls or cameos.