Gold, Yellow Sapphire and Citrine Ring, Tiffany & Co.
Centering a cushion-cut yellow sapphire, the tapering openwork band designed as leaves and vines, accented by round citrines, interior inscribed 'F.B.B.' and 'K.G.C.', size 5, partially signed Tiffany & Co. Designed by Louis Comfort Tiffany; circa 1915.
A similar gold ring designed as gold grape leaves encircling a tourmaline is illustrated by Janet Zapata, The Jewelry and Enamels of Louis Comfort Tiffany, p. 120, pl. 55.