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A diamond and sapphire ring, early 20th century, the navette-shaped ring of openwork design, set
A diamond and sapphire ring, early 20th century, the navette-shaped ring of openwork design, set with three brilliant-cut diamonds totalling approximately 1.40 carats, surrounded by smaller brilliant-cut diamonds and two lines of calibré-cut sapphires, mounted in platinum, size J, stamped PLATINUM