Two Mexican gem-set necklaces; the first containing twelve articulated links, each collet-set with an oval smoky quartz cabochon, completed by a box clasp, marked 'TAXCO TO-05 925', overall length 42.0 cm; the other is composed of bevelled annular links, with the central segment set with oval malachite cabochons completing with a conforming box clasp, marked 'TAXCO TE-26 925', overall length 39.0 cm; Total weight of items 262.1 grams (2).