A rose cut diamond has a flat base and 24 triangular facets that rise to a point, and was the most brilliant diamond cut available in the 1800s. It is shaped like a pyramid when viewed sideways. This style of gemstone cutting was perfected by the Dutch in the 17th century. It's often found in jewelry with a foil behind it in order to improve the diamond's sparkly appearance.
The rose cut diamond was first introduced in the 1500s, and was also referred to as a rosette cut diamond. Because this gemstone cut created a higher amount of brilliance than any other cut at the time, like the Pendeloque cut diamond, it remained popular for more than a century. The cutting process to create a rose cut diamond resulted in a lighter diamond with a glassy appearance. The downside is that this type of diamond must be cut thick to reduce the amount of light loss, so it didn't have much fire. The lack of fire in rose cut diamonds led to the invention of the brilliant cut diamonds still popular today. Rose cut diamonds are often found in women's jewelry surrounded by smaller semi-precious gems and other inferior stones.