Edwardian Cluster Ring With 4.00 Ct Ceylon Sapphire And Diamond On Yellow Gold And Platinum

Octagonal engagement ring in 18kt yellow gold and platinum (hallmarked with an eagle's head), the center of which is set with a cushion-cut Ceylon sapphire weighing approximately 4.00 carats, surrounded by old-cut diamonds. Total diamond weight estimated at approximately 0.90 carats (estimated color H, estimated clarity VS to SI). The sapphire is accompanied by its Carat Gem Lab certificate, specifying that it is a natural Ceylon sapphire without thermal modification. French work, circa 1920. Gross weight: 4.89 g. Motif height: 1.50 cm. Motif width: 1.30 cm. Ring size: 52 2/3 (diameter 16.75 / US 6.25). Condition: slight micro-scratches on the gold and platinum parts, slight wear to the engraving, a small chip on the back of the sapphire, and slight abrasion to the diamonds and sapphire, see details. photos.