Ruby necklaces have long been a love, passion, and grace accessory. The deep red of the ruby, also known as the "king of the gemstones," has fascinated those who wear jewelry since time immemorial.

It all started with an invitation in 1982. “Women of the jewelry industry,” it read. “You are cordially invited to a Get Acquainted Cocktail Party,” and provided the address of one woman’s home. This ...

Few photographs exist of Princess Margaret’s engagement ring, but it’s confirmed to have a ruby at its center flanked by ...