An extraordinary mid 20th century diamond ring in the form of the Masonic compass and square emblem. The largest diamond is a 0.82ct old European cut diamond. The rest are tapered diamond baguettes totaling approximately 0.25 carats. The estate reported that it was custom made in the 1950s for their grandmother. It was unclear if she was a Freemason herself, although it's certainly possible. So-called "Co-Masonic" lodges that accepted both men and women have existed since the early 1900s. Regardless of its Masonic heritage, it's a spectacularly beautiful ring. The emblem has a geometric simplicity that is easily enjoyed as an abstraction, but it could also easily be interpreted as a winged insect. In 14K yellow and white gold.