Two early 20th-century gem-set necklaces; the first is a jade lavallière, the oval carved jadeite panel claw-set to a geometric surmount with seed pearl accent, pendant drop 5.2 cm, attached to a fine cable link chain of 42.0 cm, white metal testing as 14ct; An aquamarine négligée of target design embellished with seed pearls on the cardinal points, suspending knife bars with aquamarine drops, 4.4 cm drop attached on fine cable link chain of 43.0 cm, yellow metal marked '9ct'; Total weight of items 7.0 grams. (2)