Three-stone style ring mounting in yellow and white metal

This item is a ring mounting, lacking a primary center stone, featuring a three-stone style setting. The band appears to be yellow metal, possibly gold, while the prongs and secondary stone settings are composed of a white metal, consistent with white gold or platinum. It features two small, triangle-shaped (trilliant-cut style) side stones that appear to be colorless gemstones, such as diamonds or cubic zirconia. These side stones flank a vacant four-prong center setting designed for a square or rectangular cut stone. The ring is presented in a green velvet-style jewelry box with an interior lid label that reads 'Present Co. fine jewelry and more'. This label provides context for a retailer but does not confirm the manufacturer of the ring itself. The metal composition and gemstone authenticity cannot be determined without physical testing for hallmarks and stone hardness. The mounting appears to be in good used condition, showing light surface scratches on the band consistent with wear. The style is common in late 20th-century to contemporary jewelry design. The identification is hedged as the center stone is missing and no hallmarks are visible in the image to confirm material or brand.

Based on the visual evidence provided, I have examined this three-stone style ring mounting. My estimate of $400 - $800 represents a hypothetical value for a mounting of this style, assuming the yellow metal is 14k gold and the side stones are natural diamonds of modest quality. I cannot verify the metal purity or gemstone identity from a photograph; physical testing for hallmarks and stone hardness is essential. The value is significantly impacted by the absence of a center stone and the current inability to confirm if the white metal is white gold or platinum. The appearance is consistent with late 20th-century mass-market fine jewelry, specifically reflecting the retail presentation of 'Present Co.' Based on what I can see, the mounting is in good used condition with light surface wear. Market demand for semi-mounts is generally stable, though secondary market values are often dictated by the melt value of the precious metals and the wholesale cost of the melee stones. To confirm this valuation, an in-person inspection is required to identify hallmarks and perform a thermal conductivity test on the trilliant-cut side stones. If the metal is found to be a base metal or gold plating, or if the side stones are cubic zirconia, the value would likely drop to a decorative range of $25 - $75. Conversely, if the white metal is platinum or if the mounting bears a mark from a high-end designer, the value could exceed the current estimate. This report serves as a preliminary estimate for an item of this type assuming the materials are as they appear, but does not constitute a guarantee of authenticity or material composition.