Pictured is a milky white opal cabachon ring with a stone that measures 19 by 14 by 9 mm (¾ inch X 1/2 inch X ¼ inch). Our estimate of carat weight of the opal is a hefty 13.6. This very large opal is prong set and open backed in a rose gold setting that tests as 14k using a jeweler’s machine. Eight sturdy prongs hold the opal securely above the base. The shank has a recessed edging on both sides with a columnar effect on either side that gives the ring a regal look. The stone has very nice iridescence with shades of blue and red. We see no damage, no cracking or chips, to the stone which is remarkable considering its age. The shank shows minor wear but is secure. Because the ring is unmarked we believe that it predates the 1905 Stamp Act which required that jewelry be hallmarked. We are dating it to the late Victorian Era from 1880 to 1901 a period when Queen Victoria popularized the stone. Opal is an October birthstone and in some cultures it symbolizes hope and loyalty. The ring is a size 8 and weighs 10 grams. I have worn the ring on the index finger of my left hand and it looks perfectly elegant.