Celtic-style ring with purple stone cabochon

This item is a ring featuring a central oval cabochon stone in a vibrant purple hue, stylistically consistent with amethyst. The stone is secured in a bezel setting atop a band that flares into decorative shoulders. These shoulders feature a classic Celtic-style Trinity knot or triquetra motif, characterized by interlacing loops forming three corners. The metal has a bright, silvery luster consistent with silver or white-toned costume metal. While the owner notes a '925' stamp, such a mark is not clearly legible in the provided image and remains unverified without physical inspection. The design is indicative of contemporary Celtic revival jewelry. Visible condition includes some minor surface scratches on the metal and darkened patina in the recessed areas of the knotwork, which is typical for worn jewelry. The overall craftsmanship suggests a mass-produced or artisan piece rather than fine high jewelry, given the setting's simple construction. The identity of the stone as amethyst is based on its visual properties and user-supplied information but cannot be professionally confirmed from a photograph alone.

I have examined the image provided of the Celtic-style ring. Based on what I can see, the piece features a purple cabochon and triquetra-motif shoulders. Per user submission, the item is identified as amethyst and sterling silver with a '925' stamp. However, I cannot verify the metal purity or stone species from a photograph; a physical inspection and acid or XRF testing would be required to confirm the silver content, and gemological testing would be needed to distinguish between natural amethyst, synthetic material, or glass. The estimate assumes the user-supplied details are accurate. The '925' stamp is treated as a hypothesis, as such markings can be present on silver-plated base metals. The craftsmanship appears consistent with contemporary mass-produced or artisan Celtic revival jewelry rather than high-end fine jewelry. Market demand for sterling silver amethyst rings of this style is generally stable, with value driven primarily by the weight of the silver and the decorative appeal. If the piece is confirmed as sterling silver, the $40-$80 range is typical for secondary market sales of similar types. If the item is determined to be a base-metal reproduction or 'in the style of' silver without a verified precious metal content, the value would likely decrease to $10-$20. To provide a more precise valuation, an in-person examination of the hallmark under magnification and professional stone testing would be necessary.