gemcutter noun2 •A lapidarist who cuts gems, usually precious or semiprecious, to make them suitable in size, shape, color and appearance, usually for use in jewellery such as rings or earrings.He's a typical gemcutter, mostly diamonds but some emeralds and the occasional sapphire or ruby. •(no longer used) A lapidarist who creates hardstone carvings or miniature sculpture from gemstones such as jade. formsgemcutters