Lovely vintage sterling silver pendant set with a pear cut blue topaz. The pendant has an articulated bail, which is suspended on an Italian sterling silver popcorn link chain necklace. 

Pendant

20x5mm

Topaz is 7x5mm, which has a calculated estimated weight of 1.00ct

1g

Marked "STS 925"

Chain

22 inches long

2g

Marked "LIRM 925 ITALY"