Here is this amazing early 20th century antique solid 14 K ladies yellow gold ring featuring a 13 mm by 9.9 mm natural Mexican fire opal cabochon That was researched through a online gemstone calculator giving it 6.67 cts ,carefully examined under magnification this is a absolutely gorgeous one-of-a-kind gemstone with its own variation of colors not usually seen in the Mexican fire opal that is usually a dark orange color without color play however this particular opal could not be more beautiful with its total array of colors it is without scratches or abrasions set in 20 very sturdy micro prongs .  The ring weighs 3.3 grams and it's about a size 7 ,  the top of the ring measures 15.3 mm north to south and it has a sturdy band with an old 14 K marking on the inside that is still legible.  Please study the photos words cannot describe how beautiful this gemstone is and the ring is in excellent antique condition,           Please understand the authenticity guaranteed program is a total failure, I however am a 50 year lifetime expert in antique jewelry gems and diamonds and I ship directly to my customers USPS priority mail signature required with full insurance and I will also use overnight shipping if needed, you can trust me . Thanks , Brian   .   ...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