Vintage estate opal & diamond ring, 14 karat white gold, classic halo style ring with fine quality oval crystal opal measuring 12.35 x 10.03 x 6.05 millimeters, weighing approximately 4.31 carats.  The opal has an exceptional play of color, highlighting mostly red and orange, highlighted by blue and green.  The 16 diamonds are prong set around the center opal, very well matched, G color, VS1 clarity, weighing approximately 1.12 carat total.  The ring weighs 6.25 grams.  Excellent preowned condition.  Circa 1960.  Size 8.75.