An attractive diamond ring, late 19th century, of cluster design, centring on a cushion-shaped

An attractive diamond ring, late 19th century, of cluster design, centring on a cushion-shaped diamond weighing approximately 1.70 carats, within a border of circular-cut diamonds, with fleur-de-lis shoulders, mounted in silver and gold, size M

Diamond measuring approximately 7.3 x 7.0 x 5.5mm, estimated colour approximately J, estimated clarity approximately VS2, medium blue fluorescence. Estimated remaining total diamond weight approximately 1.00-1.50 carats. Mount in good condition, gross weight 4 grams