Star Sapphire and Diamond Brooch

Exceptional star sapphire and diamond brooch, circa 1920, by Black Starr and Frost. With a large cabochon star sapphire (approx 8ct), and gorgeous old cut diamonds (approx 1.7cttw). Good clear six pointed star.

Black, Starr & Frost is an American jewelry company. Founded in 1810, the company is the oldest continuously operating jewellery firm in the United States. Their history is wonderful, including being the jewellers to Abraham Lincoln’s wife, Mary Todd Lincoln who owed $64,000 to the firm at the time her husband was assassinated, which represents $11 million today, and being mentioned in the lyrics of Diamonds are a Girl’s Best Friend.

From their website:

From kings to Carnegies, royalty to Rockefellers, princes to presidents, museums to Marilyn, Black, Starr & Frost, America’s First Jeweler Since 1810 has served American elite with exceptional jewels and gracious service since the earliest days of American history, and well before any other jewelry brand was even conceived. Today, Black, Starr & Frost is the oldest, continuously operated jewelry firm in the country. The men who lead this iconic brand were trailblazers and innovators, bringing many firsts to the world of luxury and fine jewelry, starting in New York City and ultimately expanding to 33 locations a century and a half later.