Set of stone pendants and ring in the style of jadeite or nephrite

This set consists of three circular 'bi' style pendants and one matching band ring. The stones exhibit a range of colors and translucency consistent with jadeite, nephrite, or similar greenstone/chalcedony variants. One pendant is a pale, cool-toned grey-green; the middle pendant is a darker, mossy olive green with visible inclusions; and the third pendant is a lavender-grey tone. The small ring is carved from a pale, translucent material similar to the first pendant. Each pendant is fitted with a metal bail; two appear yellow-gold-toned while the leftmost is silver-toned. Without physical testing such as specific gravity or spectroscopic analysis, it is impossible to distinguish between natural jade, treated B-grade jade, or glass/plastic imitations. The shapes are stylistically consistent with traditional Chinese jewelry motifs. No maker's marks, hallmarks, or metal purity stamps are legible in the image. The items appear in good condition with no visible chips or fractures, though the surface shows light reflections that may obscure minor wear.

Based on the visual evidence, I have examined this set comprising three 'bi' disk pendants and a matching band ring. While the stones exhibit colors and translucency consistent with jadeite or nephrite, I cannot determine from a photo whether these are natural stones, polymer-treated 'B-grade' jade, or glass imitations. The metal bails appear to be generic base metal or gold-plated alloys, as I cannot see any legible hallmarks to indicate precious metal content. My estimate of $150 to $450 is a hypothesis based on the assumption that these are mid-grade natural greenstones or nephrite with non-precious fittings. This value represents the general market demand for decorative Asian-style jewelry of this type. If physical testing, such as specific gravity or spectroscopic analysis, were to reveal these are high-quality, untreated 'Type A' jadeite, the value would significantly exceed this range. Conversely, if the materials are determined to be glass, plastic, or common serpentine, the value would likely fall below $50. No maker's marks were observed to suggest a specific designer attribution. To arrive at a more precise valuation, a physical inspection by a gemologist is required to verify the mineral species and potential treatments, alongside a test of the metal purity. Without such data, this remains a working estimate for decorative stone jewelry of unknown composition.