Stair lathe
This type of lathe includes rectangular and right-angle lathes that simultaneously ascend to the crown and descend to the tent. Stepped (or stepped) cuts are more common than other stone cuts. Perhaps the most important reason for this, apart from the greater ease of doing so, is the unique ability of the stair cutter to enhance the colors and maintain the color purity of the stone
But on the other hand, it should be noted that in this cutting, possible impurities in the stone will be more visible and visible. For this reason, this cutter is often used in stones that have a low percentage of impurities and high color purity (such as emerald)
This type of cut is the most common cut for emerald stones and due to this issue, it is also called “emerald cut”. Baguette lathe is another type of stepped lathe. Usually, the minerals of stepped stones are initially in the form of cubes or rectangular cubes, which are removed by stepping their corners to prevent the stone from breaking
