size: 5.5 weight: 5.92 grams material: platinum gemstones: natural diamonds 1.00ctw, SI-I clarity, J-L color Notes from the Curator This platinum half-eternity band carries five graduated round brilliant-cut diamonds in shared-prong mounts across the crown, their arrangement expanding toward a central stone and stepping down in size to preserve the finger's proportions—a design symbolizing eternal love that gained widespread currency only in the mid-twentieth century. The 950 purity platinum, at 95% pure metal, represents the highest grade of platinum available for jewelry and became the standard choice for wedding bands when Edwardian-era jewelers began favoring platinum over gold for its density and whiteness. Half-eternity bands, with stones only across the face of the ring, emerged as a practical alternative to full circles while preserving the symbolic continuity, and the prong setting here—minimal, open-backed—maximizes light return through each diamond's pavilion. The one-carat total weight, spread across five stones, strikes the balance jewelers call "finger coverage" without adding profile height that would catch on fabrics or doorframes, a consideration for rings worn every day.