Highly unusual late Georgian hand beaded chain woven with tiny black and off white glass beads, which spell out the following along with keys and hearts, diamonds, crowns and flags- 
“🗝️ Blest be the dear uniting love that will not let us part. Our bodies may far off remove. We still are one in heart. ❤️❤️🗝️
This November 1st Anno Domini 1837”
Beadwork was a cottage industry craft, or more usually by a craft practised by the Regency ladies much like samplers  and needlework.
Measures - 8mm wide
52.5” long 
Weighs - 18.53g
Fastens with a black enamel clasp
English 1847
Condition - Excellent antique condition 
Comes with fringed suede pouch shown.