One 25.39 carats antique cushion prasiolite quartz from Brazil, light bluish green color, VS clarity, cut grade very good, measuring 17.5 mm wide, 20 mm long, 13.5 mm deep; with very good polish and very good symmetry. The proportions of the prasiolite quartz are as follows: total depth 77.1%, table width 57.1%. Prasiolite quartz is color enhanced by irradiation.