Tourmaline

Although named after the emerald, which often receives this rectangular cut with trimmed corners, the popular emerald cut design can be applied to many gemstones. It has a range of standard gem sizes for mass-produced jewelry settings. Emerald-cut tourmaline, 4.52 cts, slight color shift. © All That Glitters. Used with permission.

Article: Standard Gem Sizes Chart

Credit: All That Glitters