An Antique Navette Shaped Sapphire and Diamond Cluster Ring

Made in St. Petersburg, circa 1890.

The ring is centered with a medium blue natural sapphire (approximately 0.40 ct),

surrounded by 24 old mine cut diamonds with the estimated total weight of 1 carat.

Height 25 mm (1 in. )

Width 8 mm (5/16 in.)

US ring size 5 (16 mm)

The ring is marked with 56 zolotnik old Russian gold standard (14K) and maker’s initials.