Here is this gorgeous mid to late 20th century vintage solid 14 K yellow gold pendant and chain necklace featuring a stunning 12.5 mm x 9.5 mm oval polished natural fire opal..  looks Australian, carefully examined under magnification this really is a beautiful Opal , about 3.0 ct it is without cracks or crazing and it sits very securely set in a multi prong setting surrounded by 18 full cut round brilliant natural diamonds that are all about 0.025 ct each G - H color SI1 clarity . Total gem carat weight about 3.50 cts Opal and diamonds combined.  Total weight 9.9 grams and the pendant itself measures about 7/8 of an inch top to bottom, on the back there are some markings that are not legible and it has been professionally tested here as solid 14 K yellow gold, it is permanently attached to a equally as beautiful mid 20th century vintage solid 14 K yellow gold rope chain that does not fit back through the Bale and the pendant and chain here are all one piece but a jeweler could get the chain off here if needed .  Please study the photos this oval has beautiful color play all the way around that's hard to photo and both the pendant and chain are in excellent vintage condition ready to be worn and loved .   ...This item will be shipped priority mail immediately. Please know all items have been carefully and professionally examined and I have attempted to describe any defects or issues the item might have .  I'm very sorry but all of the ring boxes etc. are for display purposes only and not included , thank you everybody for your continued support and please feel free to message me anytime .   Brian at Forgotten Treasures