SIZE 7 14k Yellow Gold & Amethyst Ring.  Artisan designed and made. OOAK.   The stone is 13.5x10.1x6.5 mm approximately, or about 4.5ct.  It is set in a unique oval cylinder that is part of the ring itself.  The cylinder stands 10mm high off the finger.  The stone is beautifully faceted.  

It is unmarked, but my jeweler tested it at 14k which is what it looks like.  I know that Neta prized this ring, and it is likely that we bought it at one of Florida's juried winter art shows that we visited often in the 80s and 90s.