A green tourmaline, colored diamond and diamond ring, Andrew Grima, 1968
centering a rectangular-cut green tourmaline within an elaborate mount of round brilliant-cut diamonds and yellow diamonds, accentuated with beaded detail; unsigned, attributed to Andrew Grima, with London hallmarks; green tourmaline weighing approximately: 17.00 carats; estimated total diamond weight: 7.25 carats; mounted in eighteen karat gold; size 5 (yellow diamonds not tested for origin of color)