Yellow Gold Solitaire Ring with Clear Gemstone

This is a yellow gold ring featuring a single, round, clear gemstone set in a four-prong setting. The ring has a wide, smooth band that tapers slightly towards the bottom. The gold appears to be polished but shows some surface wear consistent with regular use, including minor scratches and scuffs that contribute to a visible patina. The gemstone itself is faceted and exhibits a pale, seemingly colorless appearance. While its exact identity cannot be confirmed from the image, it could be a diamond, cubic zirconia, or another clear stone. The setting for the stone is a classic prong style, securely holding the stone in place. On the interior surface of the band, there is an inscription, though partially obscured and difficult to fully decipher, it appears to read "KXXX AP. POHO" or something similar, suggesting a possible maker's mark or purity stamp. The craftsmanship appears to be of standard jewelry quality, with a well-formed band and a securely set stone. The style suggests it could be from the mid to late 20th century, possibly functioning as an engagement ring, promise ring, or a fashion accessory. There are no obvious signs of significant damage or repairs, but the general wear indicates it is not a new item.