Diamond Cuts
Brilliant
A brilliant is a diamond or other gemstone cut in a particular form with 57-58 facets so as to have exceptional brilliance. The underside is conical, a shape that provides maximal light return through the top of the diamond. Even with modern techniques, the cutting and polishing of a diamond crystal always results in a dramatic loss of weight; rarely is this loss less than 50%.
Cabochon
A cabochon is a gemstone that has been polished and shaped into a convex form, but not faceted. The word comes from the French word caboche, which means "head" or "noggin". Cabochons typically have a smooth, domed top and a flat base, but can be made into any shape, with oval being the most common. They can also have natural markings and inclusions, and may exhibit other visual effects like asterism, cat's eye, or play of color.
Old Euro
The Old European cut is a historic diamond cut pattern that was popular between 1890 and 1930, especially during the Art Deco and Edwardian periods. It's a transitional cut that evolved from the Old Mine cut, which was popular in the 1700s. Old European cut diamonds are round, with 58 facets, a small table, high crown, and open culet. They have wider, less symmetrical facets than modern round brilliant cut diamonds, and their interaction with light creates a unique visual experience.
Old Mine
Old mine cut diamonds are square-shaped with rounded corners, 58 facets, a small table, large culet, and high crown. They are known for their unusual proportions and softer look, with rainbow flashes instead of bright white brilliance. Old mine cut diamonds are often warmer colors, like J-K, and look great in yellow gold.
Because diamonds were cut by hand and measured by eye during this time, no two old mine cut diamonds are alike. They are no longer cut in the old mine style, making them very rare and sought after by collectors. Some say old mine cut diamonds are the precursor to the modern cushion cut and round brilliant cut.
Rose Cut
The Rose cut was developed into a more standardized version during the late 16th century. The Belgian and Dutch cutters specializing in this cut were turning thinner bits of rough into the 'new' standard Rose; a flat bottomed gem with a crown covered in diamond shaped facets. These new Roses increased in popularity over the second half of the seventeenth century and increased in thickness when its popularity allowed bulkier rough to be used for this cut. Their dome shape became higher and higher as their popularity grew.
Step Cut
Step cut diamonds are known for their simple, straight, and defined cuts, which are easy to see. They are usually rectangular or square in shape, with long, narrow facets that descend toward the center of the diamond in a step-like pattern. When viewed from below, this pattern can create a hall-of-mirrors effect.