14k yellow gold. TCW 0.70 carat diamonds. VS-SI clarity and G color. Old mine cut diamonds. Beautiful butterfly push back studs. Diamonds set in bezel settings. An old mine cut diamond evokes the past, when diamonds were measured by eye and cut by hand, so this historic diamond cut is a great choice if you are looking for jewelry with antique or vintage qualities. From the early 18th century to the late 19th century, the old mine cut was perhaps the most common diamond cut and the cut you will most often find in Georgian (1714-1837) and Victorian era (1837-1901) jewelry.